From 2f8ed116461cef62125b1803a8a80af1a6dce3a1 Mon Sep 17 00:00:00 2001
From: sharpchen <rui.chen.sharp@gmail.com>
Date: Fri, 19 Jun 2026 17:57:53 +0800
Subject: [PATCH 1/2] Fix comparison for pwsh and csharp

---
 book/coming_from_powershell.md     | 102 ++++++++++++++---------------
 book/nushell_map.md                |  34 +++++-----
 book/nushell_operator_map.md       |  39 +++++------
 ja/book/nushell_operator_map.md    |  37 ++++++-----
 ko/book/nushell_operator_map.md    |  38 +++++------
 zh-CN/book/nushell_operator_map.md |  38 +++++------
 6 files changed, 145 insertions(+), 143 deletions(-)

diff --git a/book/coming_from_powershell.md b/book/coming_from_powershell.md
index 52e4ae4ab60..c27ae13c3bd 100644
--- a/book/coming_from_powershell.md
+++ b/book/coming_from_powershell.md
@@ -14,57 +14,57 @@ This means:
 
 ## Command Equivalents:
 
-| PowerShell                                                        | Nu                                            | Task                                                              |
-|-------------------------------------------------------------------|-----------------------------------------------|-------------------------------------------------------------------|
-| `Get-ChildItem`                                                   | `ls`                                          | List files in current directory                                   |
-| `Get-ChildItem <dir>`                                             | `ls <dir>`                                    | List files in given directory                                     |
-| `Get-ChildItem pattern*`                                          | `ls pattern*`                                 | Pattern-match files                                               |
-| `Get-ChildItem -Force -File -Hidden`                              | `ls --long --all` or `ls -la`                 | Detailed listing including hidden files                           |
-| `Get-ChildItem \| Where-Object { $_.PSIsContainer }`              | `ls \| where type == dir`                     | List directories only                                             |
-| `Get-ChildItem -Recurse -Filter *.rs`                             | `ls **/*.rs`                                  | Recursive search for files                                        |
-| `Get-ChildItem -Recurse Makefile \| Select-Object -Expand Name`   | `ls **/Makefile \| get name \| vim ...$in`    | Pass matched paths to command                                     |
-| `Set-Location <dir>`                                              | `cd <dir>`                                    | Change directory                                                  |
-| `Set-Location`                                                    | `cd`                                          | Go to home directory                                              |
-| `Set-Location -`                                                  | `cd -`                                        | Go to previous directory                                          |
-| `New-Item -ItemType Directory <path>`                             | `mkdir <path>`                                | Create a directory                                                |
-| `New-Item test.txt`                                               | `touch test.txt`                              | Create a file                                                     |
-| `command \| Out-File <path>`                                      | `out> <path>` or `o> <path>`                  | Save output to file (raw)                                         |
-| `command \| Set-Content <path>`                                   | `\| save <path>`                              | Save output to file (structured)                                  |
-| `command \| Out-File -Append <path>`                              | `out>> <path>` or `o>> <path>`                | Append output to file                                             |
-|                                                                   | `\| save --append <path>`                     | Append structured output                                          |
-| `command \| Out-Null`                                             | `\| ignore`                                   | Discard output                                                    |
-| `cmd1 \| Tee-Object -FilePath log.txt \| cmd2`                    | `cmd1 \| tee { save log.txt } \| cmd2`        | Tee output to file                                                |
-| `command \| Select-Object -First 5`                               | `command \| first 5`                          | Limit output to first N rows                                      |
-| `Get-Content <path>`                                              | `open --raw <path>`                           | Display file contents                                             |
-| `Move-Item <source> <dest>`                                       | `mv <source> <dest>`                          | Move file                                                         |
-| `Get-ChildItem *.md \| ForEach-Object { $_.Name }`                | `ls *.md \| each { $in.name }`                | Iterate list values                                               |
-| `foreach ($i in 1..10) { $i }`                                    | `for i in 1..10 { print $i }`                 | Loop over range                                                   |
-| `Copy-Item <source> <dest>`                                       | `cp <source> <dest>`                          | Copy file                                                         |
-| `Copy-Item -Recurse <source> <dest>`                              | `cp -r <source> <dest>`                       | Copy directory recursively                                        |
-| `Remove-Item <path>`                                              | `rm <path>`                                   | Remove file                                                       |
-|                                                                   | `rm -t <path>`                                | Move file to trash                                                |
-| `Remove-Item -Recurse -Force <path>`                              | `rm -r <path>`                                | Remove directory recursively                                      |
-| `Get-Date "<date>"`                                               | `"<date>" \| into datetime -f <format>`       | Parse date                                                        |
-| `"<str>" -replace 'a','b'`                                        | `str replace "a" "b"`                         | Replace substrings                                                |
-| `Select-String <pattern>`                                         | `where $it =~ <pattern>` or `find <pattern>`  | Search text                                                       |
-| `Get-Help <command>`                                              | `help <command>`                              | Get command help                                                  |
-| `Get-Command`                                                     | `help commands`                               | List all commands                                                 |
-| `Get-Command "*<string>*"`                                        | `help --find <string>`                        | Search commands                                                   |
-| `command1; if ($?) { command2 }`                                  | `command1; command2`                          | Run second command only if first succeeds                         |
-| `/tmp/$((Get-Random))`                                            | `$"/tmp/(random int)"`                        | String interpolation                                              |
-| `$env:Path`                                                       | `$env.PATH` or `$env.Path`                    | Show PATH                                                         |
-| `$LASTEXITCODE`                                                   | `$env.LAST_EXIT_CODE`                         | Exit code of last external command                                |
-| `$env:PATH += ":/usr/bin"`                                        | `$env.PATH = ($env.PATH \| append /usr/bin)`  | Update PATH (temporary)                                           |
-| `Get-ChildItem Env:`                                              | `$env`                                        | List environment variables                                        |
-| `$env:FOO`                                                        | `$env.FOO`                                    | Access environment variable                                       |
-| `Remove-Item Env:FOO`                                             | `hide-env FOO`                                | Unset environment variable                                        |
-| `Set-Alias s "git status -sb"`                                    | `alias s = git status -sb`                    | Temporary alias                                                   |
-| `Get-Command FOO`                                                 | `which FOO`                                   | Inspect command / alias / binary                                  |
-| `powershell -Command "<commands>"`                                | `nu -c <commands>`                            | Run inline pipeline                                               |
-| `.\script.ps1`                                                    | `nu <script file>`                            | Run script file                                                   |
-| `Get-Location` or `$PWD`                                          | `pwd` or `$env.PWD`                           | Show current directory                                            |
-| `Read-Host`                                                       | `let var = input`                             | Read user input                                                   |
-| `Read-Host -AsSecureString`                                       | `let secret = input -s`                       | Read secret input                                                 |
+| PowerShell                                                      | Nu                                           | Task                                      |
+| --------------------------------------------------------------- | -------------------------------------------- | ----------------------------------------- |
+| `Get-ChildItem`                                                 | `ls`                                         | List files in current directory           |
+| `Get-ChildItem <dir>`                                           | `ls <dir>`                                   | List files in given directory             |
+| `Get-ChildItem pattern*`                                        | `ls pattern*`                                | Pattern-match files                       |
+| `Get-ChildItem -Force -File -Hidden`                            | `ls --long --all` or `ls -la`                | Detailed listing including hidden files   |
+| `Get-ChildItem -Directory`                                      | `ls \| where type == dir`                    | List directories only                     |
+| `Get-ChildItem -Recurse -Filter *.rs`                           | `ls **/*.rs`                                 | Recursive search for files                |
+| `Get-ChildItem -Recurse Makefile \| Select-Object -Expand Name` | `ls **/Makefile \| get name \| vim ...$in`   | Pass matched paths to command             |
+| `Set-Location <dir>`                                            | `cd <dir>`                                   | Change directory                          |
+| `Set-Location`                                                  | `cd`                                         | Go to home directory                      |
+| `Set-Location -`                                                | `cd -`                                       | Go to previous directory                  |
+| `New-Item -ItemType Directory <path>`                           | `mkdir <path>`                               | Create a directory                        |
+| `New-Item test.txt`                                             | `touch test.txt`                             | Create a file                             |
+| `command \| Out-File <path>`                                    | `out> <path>` or `o> <path>`                 | Save output to file (raw)                 |
+| use dedicated cmdlet such as `ConvertTo-Json`                   | `\| save <path>`                             | Save output to file (structured)          |
+| `command \| Out-File -Append <path>`                            | `out>> <path>` or `o>> <path>`               | Append output to file                     |
+|                                                                 | `\| save --append <path>`                    | Append structured output                  |
+| `command \| Out-Null`                                           | `\| ignore`                                  | Discard output                            |
+| `cmd1 \| Tee-Object -FilePath log.txt \| cmd2`                  | `cmd1 \| tee { save log.txt } \| cmd2`       | Tee output to file                        |
+| `command \| Select-Object -First 5`                             | `command \| first 5`                         | Limit output to first N rows              |
+| `Get-Content <path>`                                            | `open --raw <path>`                          | Display file contents                     |
+| `Move-Item <source> <dest>`                                     | `mv <source> <dest>`                         | Move file                                 |
+| `Get-ChildItem *.md \| ForEach-Object { $_.Name }`              | `ls *.md \| each { $in.name }`               | Iterate list values                       |
+| `foreach ($i in 1..10) { $i }`                                  | `for i in 1..10 { print $i }`                | Loop over range                           |
+| `Copy-Item <source> <dest>`                                     | `cp <source> <dest>`                         | Copy file                                 |
+| `Copy-Item -Recurse <source> <dest>`                            | `cp -r <source> <dest>`                      | Copy directory recursively                |
+| `Remove-Item <path>`                                            | `rm <path>`                                  | Remove file                               |
+|                                                                 | `rm -t <path>`                               | Move file to trash                        |
+| `Remove-Item -Recurse -Force <path>`                            | `rm -r <path>`                               | Remove directory recursively              |
+| `Get-Date "<date>"`                                             | `"<date>" \| into datetime -f <format>`      | Parse date                                |
+| `"<str>" -replace 'a','b'`                                      | `str replace "a" "b"`                        | Replace substrings                        |
+| `Select-String <pattern>`                                       | `where $it =~ <pattern>` or `find <pattern>` | Search text                               |
+| `Get-Help <command>`                                            | `help <command>`                             | Get command help                          |
+| `Get-Command`                                                   | `help commands`                              | List all commands                         |
+| `Get-Command "*<string>*"`                                      | `help --find <string>`                       | Search commands                           |
+| `command1; if ($?) { command2 }`                                | `command1; command2`                         | Run second command only if first succeeds |
+| `"/tmp/$((Get-Random))"`                                        | `$"/tmp/(random int)"`                       | String interpolation                      |
+| `$env:Path`                                                     | `$env.PATH` or `$env.Path`                   | Show PATH                                 |
+| `$LASTEXITCODE`                                                 | `$env.LAST_EXIT_CODE`                        | Exit code of last external command        |
+| `$env:PATH += ":/usr/bin"`                                      | `$env.PATH = ($env.PATH \| append /usr/bin)` | Update PATH (temporary)                   |
+| `Get-ChildItem Env:`                                            | `$env`                                       | List environment variables                |
+| `$env:FOO`                                                      | `$env.FOO`                                   | Access environment variable               |
+| `Remove-Item Env:FOO`                                           | `hide-env FOO`                               | Unset environment variable                |
+| `function s { git status -sb }`                                 | `alias s = git status -sb`                   | Temporary alias                           |
+| `Get-Command FOO`                                               | `which FOO`                                  | Inspect command / alias / binary          |
+| `powershell -Command "<commands>"`                              | `nu -c <commands>`                           | Run inline pipeline                       |
+| `.\script.ps1`                                                  | `nu <script file>`                           | Run script file                           |
+| `Get-Location` or `$PWD`                                        | `pwd` or `$env.PWD`                          | Show current directory                    |
+| `Read-Host`                                                     | `let var = input`                            | Read user input                           |
+| `Read-Host -AsSecureString`                                     | `let secret = input -s`                      | Read secret input                         |
 
 ## Clearing the commandline buffer by pressing ESC
 
diff --git a/book/nushell_map.md b/book/nushell_map.md
index e108663a54a..ec7c416857c 100644
--- a/book/nushell_map.md
+++ b/book/nushell_map.md
@@ -4,31 +4,31 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 
 | Nushell                                                    | SQL                           | .Net LINQ (C#)                                       | PowerShell (without external modules)      | Bash                                            |
 | ---------------------------------------------------------- | ----------------------------- | ---------------------------------------------------- | ------------------------------------------ | ----------------------------------------------- |
-| [`alias`](/commands/docs/alias.md)                         |                               |                                                      | `alias`                                    | `alias`                                         |
+| [`alias`](/commands/docs/alias.md)                         |                               |                                                      | `Set-Alias`                                    | `alias`                                         |
 | [`append`](/commands/docs/append.md)                       |                               | `Append`                                             | `-Append`                                  |                                                 |
-| [`math avg`](/commands/docs/math_avg.md)                   | `avg`                         | `Average`                                            | `Measure-Object`, `measure`                |                                                 |
-| [Operators](operators.md) and [`math`](/commands/docs/math.md) | Math operators            | `Aggregate`, `Average`, `Count`, `Max`, `Min`, `Sum` |                                            | `bc`                                            |
+| [`math avg`](/commands/docs/math_avg.md)                   | `avg`                         | `Average`                                            | `Measure-Object -Average`                |                                                 |
+| [Operators](operators.md) and [`math`](/commands/docs/math.md) | Math operators            | `Aggregate`, `Average`, `Count`, `Max`, `Min`, `Sum` | `Measure-Object -Sum` etc                                          | `bc`                                            |
 | [`cd`](/commands/docs/cd.md)                               |                               |                                                      | `Set-Location`, `cd`                       | `cd`                                            |
 | [`clear`](/commands/docs/clear.md)<br /><kbd>Ctrl/⌘</kbd>+<kbd>L</kbd> |                  |                                                      | `Clear-Host`<br /><kbd>Ctrl/⌘</kbd>+<kbd>L</kbd>  | `clear`<br /><kbd>Ctrl/⌘</kbd>+<kbd>L</kbd> |
 | [`config`](/commands/docs/config.md)<br />`$nu.default-config-dir`  |                      |                                                      | `$Profile`                                 | `~/.bashrc`, `~/.profile`                       |
 | [`cp`](/commands/docs/cp.md)                               |                               |                                                      | `Copy-Item`, `cp`, `copy`                  | `cp`                                            |
 | [`date`](/commands/docs/date.md)                           | `NOW()`, `getdate()`          | `DateTime` class                                     | `Get-Date`                                 | `date`                                          |
-| [`du`](/commands/docs/du.md)<br />[`ls --du`](/commands/docs/ls.md) |                      |                                                      |                                            | `du`                                            |
+| [`du`](/commands/docs/du.md)<br />[`ls --du`](/commands/docs/ls.md) |                      |                                                      | `Get-ChildItem -File -Recurse -Force \| Measure-Object Length -Sum`                                          | `du`                                            |
 | [`each`](/commands/docs/each.md)                           | Cursors                       |                                                      | `ForEach-Object`, `foreach`, `for`         | `for`                                           |
 | [`exit`](/commands/docs/exit.md)<br /><kbd>Ctrl/⌘</kbd>+<kbd>D</kbd> |                    |                                                      | `exit`<br /><kbd>Ctrl/⌘</kbd>+<kbd>D</kbd> | `exit`<br /><kbd>Ctrl/⌘</kbd>+<kbd>D</kbd>    | 
 | [`http`](/commands/docs/http.md)                           |                               | `HttpClient`, `WebClient`, `HttpWebRequest/Response` | `Invoke-WebRequest`                        | `wget`, `curl`                                  |
 | [`first`](/commands/docs/first.md)                         | `top`, `limit`                | `First`, `FirstOrDefault`                            | `Select-Object -First`                     | `head`                                          |
-| [`format`](/commands/docs/format.md), [`str`](/commands/docs/str.md) |                     | `String.Format`                                      | `String.Format`                            | `printf`                                        |
+| [`format`](/commands/docs/format.md), [`str`](/commands/docs/str.md) |                     | `String.Format`                                      | `<format> -f <values>`                            | `printf`                                        |
 | [`from`](/commands/docs/from.md)                           | `import flatfile,` `openjson`, `cast(variable as xml) `|                             | `Import/ConvertFrom-{Csv,Xml,Html,Json}`   |                                                 |
-| [`get`](/commands/docs/get.md)                             |                               | `Select`                                             | `(cmd).column`                             |                                                 |
+| [`get`](/commands/docs/get.md)                             |                               | `Select`                                             | `command \| ForEach-Object <name>`                             |                                                 |
 | [`group-by`](/commands/docs/group-by.md)                   | `group by`                    | `GroupBy`, `group`                                   | `Group-Object`, `group`                    |                                                 |
 | [`help`](/commands/docs/help.md)                           | `sp_help`                     |                                                      | `Get-Help`, `help`, `man`                  | `man`                                           |
 | [`history`](/commands/docs/history.md)                     |                               |                                                      | `Get-History`, `history`                   | `history`                                       |
-| [`is-empty`](/commands/docs/is-empty.md)                   | `is null`                     | `String.IsNullOrEmpty`                               | `String.IsNullOrEmpty`                     |                                                 |
+| [`is-empty`](/commands/docs/is-empty.md)                   | `is null`                     | `String.IsNullOrEmpty`                               | `[string]::IsNullOrEmpty`                     |                                                 |
 | [`kill`](/commands/docs/kill.md)                           |                               |                                                      | `Stop-Process`, `kill`                     | `kill`                                          |
 | [`last`](/commands/docs/last.md)                           |                               | `Last`, `LastOrDefault`                              | `Select-Object -Last`                      | `tail`                                          |
 | [`str stats`](/commands/docs/str_stats.md)<br />[`length`](/commands/docs/length.md)<br />[`str length`](/commands/docs/str_length.md) | `count`  | `Count`                                        | `Measure-Object`, `measure`                | `wc`                                            |
-| [`lines`](/commands/docs/lines.md)                         |                               |                                                      | `File.ReadAllLines`                        |                                                 |
+| [`lines`](/commands/docs/lines.md)                         |                               | `File.ReadAllLines`                                  | `Get-Content`                       |                                                 |
 | [`ls`](/commands/docs/ls.md)                               |                               |                                                      | `Get-ChildItem`, `dir`, `ls`               | `ls`                                            |
 | [`mkdir`](/commands/docs/mkdir.md)                         |                               |                                                      | `mkdir`, `md`, `New-Item -ItemType Directory` | `mkdir`                                      |
 | [`mv`](/commands/docs/mv.md)                               |                               |                                                      | `Move-Item`, `mv`, `move`, `mi`            | `mv`                                            |
@@ -42,20 +42,20 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`rename`](/commands/docs/rename.md)                       |                               |                                                      | `Rename-Item`, `ren`, `rni`                | `mv`                                            |
 | [`reverse`](/commands/docs/reverse.md)                     |                               | `Reverse`                                            | `[Array]::Reverse($var)`                   |                                                 |
 | [`rm`](/commands/docs/rm.md)                               |                               |                                                      | `Remove-Item`, `del`, `erase`, `rd`, `ri`, `rm`, `rmdir` | `rm`                              |
-| [`save`](/commands/docs/save.md)                           |                               |                                                      | `Write-Output`, `Out-File`                 | `> foo.txt` redirection                         |
+| [`save`](/commands/docs/save.md)                           |                               |                                                      | `Out-File`, `> foo.txt` redirection                 | `> foo.txt` redirection                         |
 | [`select`](/commands/docs/select.md)                       | `select`                      | `Select`                                             | `Select-Object`, `select`                  |                                                 |
 | [`shuffle`](/commands/docs/shuffle.md)                     |                               | `Random`                                             | `Sort-Object {Get-Random}`                 |                                                 |
 | [`skip`](/commands/docs/skip.md)                           | `where row_number()`          | `Skip`                                               | `Select-Object -Skip`                      |                                                 |
 | [`skip until`](/commands/docs/skip_until.md)               |                               | `SkipWhile`                                          |                                            |                                                 |
 | [`skip while`](/commands/docs/skip_while.md)               |                               | `SkipWhile`                                          |                                            |                                                 |
-| [`slice`](/commands/docs/slice.md)                         | `limit x offset y`, `rownumber` | `ElementAt`                                        | `[x]`, indexing operator, `ElementAt`      |                                                 |
+| [`slice`](/commands/docs/slice.md)                         | `limit x offset y`, `rownumber` | `ElementAt`                                        | `[x]`, indexing operator, `ElementAt`, `Select-Object -Index`      |                                                 |
 | [`sort-by`](/commands/docs/sort-by.md)                     | `order by`                    | `OrderBy`, `OrderByDescending`, `ThenBy`, `ThenByDescending` | `Sort-Object`, `sort`              | `sort`                                          |
 | [`str`](/commands/docs/str.md)                             | String functions              | `String` class                                       | `String` class                             |                                                 |
-| [`str join`](/commands/docs/str_join.md)                   | `concat_ws`                   | `Join`                                               | `Join-String`                              |                                                 |
+| [`str join`](/commands/docs/str_join.md)                   | `concat_ws`                   | `Join`                                               | `Join-String`, `<list> -join <sep>`                              |                                                 |
 | [`str trim`](/commands/docs/str_trim.md)                   | `rtrim`, `ltrim`              | `Trim`, `TrimStart`, `TrimEnd`                       | `Trim`                                     |                                                 |
 | [`math sum`](/commands/docs/math_sum.md)                   | ``sum`                        | `Sum`                                                | `Measure-Object`, `measure`                |                                                 |
 | [`uname`](/commands/docs/uname.md)<br />[`sys host`](/commands/docs/sys_host.md)                   |                               |                                                      | `Get-ComputerInfo`                         | `uname`                                         |
-| [`sys disks`](/commands/docs/sys_disks.md)                 |                               |                                                      | `Get-ComputerInfo`                         | `lsblk`                                         |
+| [`sys disks`](/commands/docs/sys_disks.md)                 |                               |                                                      | `Get-Disk`, `Get-Partition`, `Get-Volumn` etc                         | `lsblk`                                         |
 | [`sys mem`](/commands/docs/sys_mem.md)                     |                               |                                                      | `Get-ComputerInfo`                         | `free`                                          |
 | [`table`](/commands/docs/table.md)                         |                               |                                                      | `Format-Table`, `ft`, `Format-List`, `fl`  |                                                 |
 | [`take`](/commands/docs/take.md)                           | `top`, `limit`                | `Take`                                               | `Select-Object -First`                     | `head`                                          |
@@ -63,11 +63,11 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`take while`](/commands/docs/take_while.md)               |                               | `TakeWhile`                                          |                                            |                                                 |
 | [`timeit`](/commands/docs/timeit.md)                       |                               |                                                      | `Measure-Command`                          | `time`                                          |
 | [`to`](/commands/docs/to.md)                               |                               |                                                      | `Export`/`ConvertTo-{Csv,Xml,Html,Json}`   |                                                 |
-| [`touch`](/commands/docs/touch.md)                         |                               |                                                      | `Set-Content`                              | `touch`                                         |
-| [`uniq`](/commands/docs/uniq.md)                           | `distinct`                    | `Distinct`                                           | `Get-Unique`, `gu`                         | `uniq`                                          |
-| [`update`](/commands/docs/update.md)                       |                               |                                                      | `ForEach-Object`                           |                                                 |
-| [`upsert`](/commands/docs/upsert.md)                       | `As`                          |                                                      | `ForEach-Object`                           |                                                 |
+| [`touch`](/commands/docs/touch.md)                         |                               |                                                      | `New-Item`                              | `touch`                                         |
+| [`uniq`](/commands/docs/uniq.md)                           | `distinct`                    | `Distinct`                                           | `Get-Unique`, `Sort-Object -Unique`                         | `uniq`                                          |
+| [`update`](/commands/docs/update.md)                       |                               |                                                      |                            |                                                 |
+| [`upsert`](/commands/docs/upsert.md)                       | `As`                          |                                                      |                            |                                                 |
 | [`version`](/commands/docs/version.md)                     | `select @@version`            |                                                      | `$PSVersionTable`                          |                                                 |
 | `$env.FOO = "bar"`<br />[`with-env`](/commands/docs/with-env.md) |                         |                                                      | `$env:FOO = 'bar'`                         | `export FOO "bar"`                              |
-| [`where`](/commands/docs/where.md)                         | `where`                       | `Where`                                              | `Where-Object`, `where`, `?` operator      |                                                 |
+| [`where`](/commands/docs/where.md)                         | `where`                       | `Where`                                              | `Where-Object`, `where`, `?`      |                                                 |
 | [`which`](/commands/docs/which.md)                         |                               |                                                      | `Get-Command`                              | `which`                                         |
diff --git a/book/nushell_operator_map.md b/book/nushell_operator_map.md
index db02afd8add..4c6fd784677 100644
--- a/book/nushell_operator_map.md
+++ b/book/nushell_operator_map.md
@@ -3,28 +3,29 @@ next:
   text: Design Notes
   link: /book/design_notes.md
 ---
+
 # Nushell operator map
 
 The idea behind this table is to help you understand how Nu operators relate to other language operators. We've tried to produce a map of all the nushell operators and what their equivalents are in other languages. Contributions are welcome.
 
 Note: this table assumes Nu 0.14.1 or later.
 
-| Nushell | SQL      | Python             | .NET LINQ (C#)       | PowerShell             | Bash               |
-| ------- | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
-| ==      | =        | ==                 | ==                   | -eq, -is               | -eq                |
-| !=      | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
-| <       | <        | <                  | <                    | -lt                    | -lt                |
-| <=      | <=       | <=                 | <=                   | -le                    | -le                |
-| >       | >        | >                  | >                    | -gt                    | -gt                |
-| >=      | >=       | >=                 | >=                   | -ge                    | -ge                |
-| =~      | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
-| !~      | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
-| +       | +        | +                  | +                    | +                      | +                  |
-| -       | -        | -                  | -                    | -                      | -                  |
-| \*      | \*       | \*                 | \*                   | \*                     | \*                 |
-| /       | /        | /                  | /                    | /                      | /                  |
-| \*\*    | pow      | \*\*               | Power                | Pow                    | \*\*               |
-| in      | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
-| not-in  | not in   | not in             | Except               | -NotIn                 |                    |
-| and     | and      | and                | &&                   | -And, &&               | -a, &&             |
-| or      | or       | or                 | \|\|                 | -Or, \|\|              | -o, \|\|           |
+| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
+| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
+| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
+| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
+| <       | <        | <                  | <                             | -lt                   | -lt                |
+| <=      | <=       | <=                 | <=                            | -le                   | -le                |
+| >       | >        | >                  | >                             | -gt                   | -gt                |
+| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
+| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
+| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
+| +       | +        | +                  | +                             | +                     | +                  |
+| -       | -        | -                  | -                             | -                     | -                  |
+| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
+| /       | /        | /                  | /                             | /                     | /                  |
+| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
+| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
+| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
+| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
+| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |
diff --git a/ja/book/nushell_operator_map.md b/ja/book/nushell_operator_map.md
index 9a736fa97c4..dd169480994 100644
--- a/ja/book/nushell_operator_map.md
+++ b/ja/book/nushell_operator_map.md
@@ -4,21 +4,22 @@
 
 注: Nu が 0.14.1 以降であることを想定しています。
 
-| Nushell | SQL      | Python             | .Net LINQ (C#)       | PowerShell             | Bash               |
-| ------- | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
-| ==      | =        | ==                 | ==                   | -eq, -is               | -eq                |
-| !=      | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
-| <       | <        | <                  | <                    | -lt                    | -lt                |
-| <=      | <=       | <=                 | <=                   | -le                    | -le                |
-| >       | >        | >                  | >                    | -gt                    | -gt                |
-| >=      | >=       | >=                 | >=                   | -ge                    | -ge                |
-| =~      | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
-| !~      | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
-| +       | +        | +                  | +                    | +                      | +                  |
-| -       | -        | -                  | -                    | -                      | -                  |
-| \*      | \*       | \*                 | \*                   | \*                     | \*                 |
-| /       | /        | /                  | /                    | /                      | /                  |
-| in      | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
-| not-in  | not in   | not in             | Except               | -NotIn                 |                    |
-| and     | and      | and                | &&                   | -And                   | -a, &&             |
-| or      | or       | or                 | \|\|                 | -Or                    | -o, \|\|           |
+| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
+| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
+| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
+| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
+| <       | <        | <                  | <                             | -lt                   | -lt                |
+| <=      | <=       | <=                 | <=                            | -le                   | -le                |
+| >       | >        | >                  | >                             | -gt                   | -gt                |
+| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
+| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
+| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
+| +       | +        | +                  | +                             | +                     | +                  |
+| -       | -        | -                  | -                             | -                     | -                  |
+| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
+| /       | /        | /                  | /                             | /                     | /                  |
+| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
+| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
+| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
+| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
+| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |
diff --git a/ko/book/nushell_operator_map.md b/ko/book/nushell_operator_map.md
index c83d35ab44d..850cd1f35f8 100644
--- a/ko/book/nushell_operator_map.md
+++ b/ko/book/nushell_operator_map.md
@@ -10,22 +10,22 @@ next:
 
 참고: 이 표는 Nu 0.14.1 이상을 가정합니다.
 
-| 누셸   | SQL      | 파이썬             | .NET LINQ (C#)       | PowerShell             | Bash               |
-| ------ | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
-| ==     | =        | ==                 | ==                   | -eq, -is               | -eq                |
-| !=     | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
-| <      | <        | <                  | <                    | -lt                    | -lt                |
-| <=     | <=       | <=                 | <=                   | -le                    | -le                |
-| >      | >        | >                  | >                    | -gt                    | -gt                |
-| >=     | >=       | >=                 | >=                   | -ge                    | -ge                |
-| =~     | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
-| !~     | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
-| +      | +        | +                  | +                    | +                      | +                  |
-| -      | -        | -                  | -                    | -                      | -                  |
-| \*     | \*       | \*                 | \*                   | \*                     | \*                 |
-| /      | /        | /                  | /                    | /                      | /                  |
-| \*\*   | pow      | \*\*               | Power                | Pow                    | \*\*               |
-| in     | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
-| not-in | not in   | not in             | Except               | -NotIn                 |                    |
-| and    | and      | and                | &&                   | -And, &&               | -a, &&             |
-| or     | or       | or                 | \|\|                 | -Or, \|\|              | -o, \|\|           |
+| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
+| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
+| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
+| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
+| <       | <        | <                  | <                             | -lt                   | -lt                |
+| <=      | <=       | <=                 | <=                            | -le                   | -le                |
+| >       | >        | >                  | >                             | -gt                   | -gt                |
+| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
+| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
+| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
+| +       | +        | +                  | +                             | +                     | +                  |
+| -       | -        | -                  | -                             | -                     | -                  |
+| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
+| /       | /        | /                  | /                             | /                     | /                  |
+| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
+| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
+| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
+| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
+| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |
diff --git a/zh-CN/book/nushell_operator_map.md b/zh-CN/book/nushell_operator_map.md
index 7588af72cd9..3e5c7d06652 100644
--- a/zh-CN/book/nushell_operator_map.md
+++ b/zh-CN/book/nushell_operator_map.md
@@ -4,22 +4,22 @@
 
 注意：此表针对 Nu 0.14.1 或更高版本。
 
-| Nushell | SQL      | Python             | .NET LINQ (C#)       | PowerShell             | Bash               |
-| ------- | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
-| ==      | =        | ==                 | ==                   | -eq, -is               | -eq                |
-| !=      | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
-| <       | <        | <                  | <                    | -lt                    | -lt                |
-| <=      | <=       | <=                 | <=                   | -le                    | -le                |
-| >       | >        | >                  | >                    | -gt                    | -gt                |
-| >=      | >=       | >=                 | >=                   | -ge                    | -ge                |
-| =~      | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
-| !~      | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
-| +       | +        | +                  | +                    | +                      | +                  |
-| -       | -        | -                  | -                    | -                      | -                  |
-| \*      | \*       | \*                 | \*                   | \*                     | \*                 |
-| /       | /        | /                  | /                    | /                      | /                  |
-| \*\*    | pow      | \*\*               | Power                | Pow                    | \*\*               |
-| in      | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
-| not-in  | not in   | not in             | Except               | -NotIn                 |                    |
-| and     | and      | and                | &&                   | -And, &&               | -a, &&             |
-| or      | or       | or                 | \|\|                 | -Or, \|\|              | -o, \|\|           |
+| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
+| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
+| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
+| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
+| <       | <        | <                  | <                             | -lt                   | -lt                |
+| <=      | <=       | <=                 | <=                            | -le                   | -le                |
+| >       | >        | >                  | >                             | -gt                   | -gt                |
+| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
+| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
+| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
+| +       | +        | +                  | +                             | +                     | +                  |
+| -       | -        | -                  | -                             | -                     | -                  |
+| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
+| /       | /        | /                  | /                             | /                     | /                  |
+| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
+| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
+| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
+| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
+| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |

From 8333ce57fb40be0080c8af0b33b2be7958dec23a Mon Sep 17 00:00:00 2001
From: Darren Schroeder <343840+fdncred@users.noreply.github.com>
Date: Sat, 20 Jun 2026 08:08:03 -0500
Subject: [PATCH 2/2] typo, undo some map changes

---
 book/coming_from_powershell.md     | 15 ++++++------
 book/nushell_map.md                |  8 +++----
 book/nushell_operator_map.md       | 38 +++++++++++++++---------------
 ja/book/nushell_operator_map.md    | 37 ++++++++++++++---------------
 ko/book/nushell_operator_map.md    | 38 +++++++++++++++---------------
 zh-CN/book/nushell_operator_map.md | 38 +++++++++++++++---------------
 6 files changed, 86 insertions(+), 88 deletions(-)

diff --git a/book/coming_from_powershell.md b/book/coming_from_powershell.md
index c27ae13c3bd..fd99dae11e1 100644
--- a/book/coming_from_powershell.md
+++ b/book/coming_from_powershell.md
@@ -6,11 +6,10 @@ PowerShell pipelines pass rich **.NET objects**, which allow property access lik
 Nushell pipelines, by contrast, pass **structured data** such as tables, lists, and values.  
 This means:
 
-- No `.PropertyName` access  
-- Use `get column`, `select`, `$it.column`, or table operations instead  
+- No `.PropertyName` access
+- Use `get column`, `select`, `$it.column`, or table operations instead
 - Commands always receive predictable structured input, not strings or .NET types
-:::
-
+  :::
 
 ## Command Equivalents:
 
@@ -20,7 +19,7 @@ This means:
 | `Get-ChildItem <dir>`                                           | `ls <dir>`                                   | List files in given directory             |
 | `Get-ChildItem pattern*`                                        | `ls pattern*`                                | Pattern-match files                       |
 | `Get-ChildItem -Force -File -Hidden`                            | `ls --long --all` or `ls -la`                | Detailed listing including hidden files   |
-| `Get-ChildItem -Directory`                                      | `ls \| where type == dir`                    | List directories only                     |
+| `Get-ChildItem \| Where-Object { $_.PSIsContainer }`            | `ls \| where type == dir`                    | List directories only                     |
 | `Get-ChildItem -Recurse -Filter *.rs`                           | `ls **/*.rs`                                 | Recursive search for files                |
 | `Get-ChildItem -Recurse Makefile \| Select-Object -Expand Name` | `ls **/Makefile \| get name \| vim ...$in`   | Pass matched paths to command             |
 | `Set-Location <dir>`                                            | `cd <dir>`                                   | Change directory                          |
@@ -29,7 +28,7 @@ This means:
 | `New-Item -ItemType Directory <path>`                           | `mkdir <path>`                               | Create a directory                        |
 | `New-Item test.txt`                                             | `touch test.txt`                             | Create a file                             |
 | `command \| Out-File <path>`                                    | `out> <path>` or `o> <path>`                 | Save output to file (raw)                 |
-| use dedicated cmdlet such as `ConvertTo-Json`                   | `\| save <path>`                             | Save output to file (structured)          |
+| `command \| Set-Content <path>`                                 | `\| save <path>`                             | Save output to file (structured)          |
 | `command \| Out-File -Append <path>`                            | `out>> <path>` or `o>> <path>`               | Append output to file                     |
 |                                                                 | `\| save --append <path>`                    | Append structured output                  |
 | `command \| Out-Null`                                           | `\| ignore`                                  | Discard output                            |
@@ -51,14 +50,14 @@ This means:
 | `Get-Command`                                                   | `help commands`                              | List all commands                         |
 | `Get-Command "*<string>*"`                                      | `help --find <string>`                       | Search commands                           |
 | `command1; if ($?) { command2 }`                                | `command1; command2`                         | Run second command only if first succeeds |
-| `"/tmp/$((Get-Random))"`                                        | `$"/tmp/(random int)"`                       | String interpolation                      |
+| `/tmp/$((Get-Random))`                                          | `$"/tmp/(random int)"`                       | String interpolation                      |
 | `$env:Path`                                                     | `$env.PATH` or `$env.Path`                   | Show PATH                                 |
 | `$LASTEXITCODE`                                                 | `$env.LAST_EXIT_CODE`                        | Exit code of last external command        |
 | `$env:PATH += ":/usr/bin"`                                      | `$env.PATH = ($env.PATH \| append /usr/bin)` | Update PATH (temporary)                   |
 | `Get-ChildItem Env:`                                            | `$env`                                       | List environment variables                |
 | `$env:FOO`                                                      | `$env.FOO`                                   | Access environment variable               |
 | `Remove-Item Env:FOO`                                           | `hide-env FOO`                               | Unset environment variable                |
-| `function s { git status -sb }`                                 | `alias s = git status -sb`                   | Temporary alias                           |
+| `Set-Alias s "git status -sb"`                                  | `alias s = git status -sb`                   | Temporary alias                           |
 | `Get-Command FOO`                                               | `which FOO`                                  | Inspect command / alias / binary          |
 | `powershell -Command "<commands>"`                              | `nu -c <commands>`                           | Run inline pipeline                       |
 | `.\script.ps1`                                                  | `nu <script file>`                           | Run script file                           |
diff --git a/book/nushell_map.md b/book/nushell_map.md
index ec7c416857c..8c42c70937a 100644
--- a/book/nushell_map.md
+++ b/book/nushell_map.md
@@ -7,7 +7,7 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`alias`](/commands/docs/alias.md)                         |                               |                                                      | `Set-Alias`                                    | `alias`                                         |
 | [`append`](/commands/docs/append.md)                       |                               | `Append`                                             | `-Append`                                  |                                                 |
 | [`math avg`](/commands/docs/math_avg.md)                   | `avg`                         | `Average`                                            | `Measure-Object -Average`                |                                                 |
-| [Operators](operators.md) and [`math`](/commands/docs/math.md) | Math operators            | `Aggregate`, `Average`, `Count`, `Max`, `Min`, `Sum` | `Measure-Object -Sum` etc                                          | `bc`                                            |
+| [Operators](operators.md) and [`math`](/commands/docs/math.md) | Math operators            | `Aggregate`, `Average`, `Count`, `Max`, `Min`, `Sum` | `Measure-Object -Sum`                                          | `bc`                                            |
 | [`cd`](/commands/docs/cd.md)                               |                               |                                                      | `Set-Location`, `cd`                       | `cd`                                            |
 | [`clear`](/commands/docs/clear.md)<br /><kbd>Ctrl/⌘</kbd>+<kbd>L</kbd> |                  |                                                      | `Clear-Host`<br /><kbd>Ctrl/⌘</kbd>+<kbd>L</kbd>  | `clear`<br /><kbd>Ctrl/⌘</kbd>+<kbd>L</kbd> |
 | [`config`](/commands/docs/config.md)<br />`$nu.default-config-dir`  |                      |                                                      | `$Profile`                                 | `~/.bashrc`, `~/.profile`                       |
@@ -42,7 +42,7 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`rename`](/commands/docs/rename.md)                       |                               |                                                      | `Rename-Item`, `ren`, `rni`                | `mv`                                            |
 | [`reverse`](/commands/docs/reverse.md)                     |                               | `Reverse`                                            | `[Array]::Reverse($var)`                   |                                                 |
 | [`rm`](/commands/docs/rm.md)                               |                               |                                                      | `Remove-Item`, `del`, `erase`, `rd`, `ri`, `rm`, `rmdir` | `rm`                              |
-| [`save`](/commands/docs/save.md)                           |                               |                                                      | `Out-File`, `> foo.txt` redirection                 | `> foo.txt` redirection                         |
+| [`save`](/commands/docs/save.md)                           |                               |                                                      | `Out-File`, `> foo.txt`                 | `> foo.txt`                         |
 | [`select`](/commands/docs/select.md)                       | `select`                      | `Select`                                             | `Select-Object`, `select`                  |                                                 |
 | [`shuffle`](/commands/docs/shuffle.md)                     |                               | `Random`                                             | `Sort-Object {Get-Random}`                 |                                                 |
 | [`skip`](/commands/docs/skip.md)                           | `where row_number()`          | `Skip`                                               | `Select-Object -Skip`                      |                                                 |
@@ -55,7 +55,7 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`str trim`](/commands/docs/str_trim.md)                   | `rtrim`, `ltrim`              | `Trim`, `TrimStart`, `TrimEnd`                       | `Trim`                                     |                                                 |
 | [`math sum`](/commands/docs/math_sum.md)                   | ``sum`                        | `Sum`                                                | `Measure-Object`, `measure`                |                                                 |
 | [`uname`](/commands/docs/uname.md)<br />[`sys host`](/commands/docs/sys_host.md)                   |                               |                                                      | `Get-ComputerInfo`                         | `uname`                                         |
-| [`sys disks`](/commands/docs/sys_disks.md)                 |                               |                                                      | `Get-Disk`, `Get-Partition`, `Get-Volumn` etc                         | `lsblk`                                         |
+| [`sys disks`](/commands/docs/sys_disks.md)                 |                               |                                                      | `Get-Disk`, `Get-Partition`, `Get-Volume` etc                         | `lsblk`                                         |
 | [`sys mem`](/commands/docs/sys_mem.md)                     |                               |                                                      | `Get-ComputerInfo`                         | `free`                                          |
 | [`table`](/commands/docs/table.md)                         |                               |                                                      | `Format-Table`, `ft`, `Format-List`, `fl`  |                                                 |
 | [`take`](/commands/docs/take.md)                           | `top`, `limit`                | `Take`                                               | `Select-Object -First`                     | `head`                                          |
@@ -66,7 +66,7 @@ The idea behind this table is to help you understand how Nu builtins and plugins
 | [`touch`](/commands/docs/touch.md)                         |                               |                                                      | `New-Item`                              | `touch`                                         |
 | [`uniq`](/commands/docs/uniq.md)                           | `distinct`                    | `Distinct`                                           | `Get-Unique`, `Sort-Object -Unique`                         | `uniq`                                          |
 | [`update`](/commands/docs/update.md)                       |                               |                                                      |                            |                                                 |
-| [`upsert`](/commands/docs/upsert.md)                       | `As`                          |                                                      |                            |                                                 |
+| [`upsert`](/commands/docs/upsert.md)                       |                           |                                                      |                            |                                                 |
 | [`version`](/commands/docs/version.md)                     | `select @@version`            |                                                      | `$PSVersionTable`                          |                                                 |
 | `$env.FOO = "bar"`<br />[`with-env`](/commands/docs/with-env.md) |                         |                                                      | `$env:FOO = 'bar'`                         | `export FOO "bar"`                              |
 | [`where`](/commands/docs/where.md)                         | `where`                       | `Where`                                              | `Where-Object`, `where`, `?`      |                                                 |
diff --git a/book/nushell_operator_map.md b/book/nushell_operator_map.md
index 4c6fd784677..a30c39c486a 100644
--- a/book/nushell_operator_map.md
+++ b/book/nushell_operator_map.md
@@ -10,22 +10,22 @@ The idea behind this table is to help you understand how Nu operators relate to
 
 Note: this table assumes Nu 0.14.1 or later.
 
-| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
-| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
-| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
-| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
-| <       | <        | <                  | <                             | -lt                   | -lt                |
-| <=      | <=       | <=                 | <=                            | -le                   | -le                |
-| >       | >        | >                  | >                             | -gt                   | -gt                |
-| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
-| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
-| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
-| +       | +        | +                  | +                             | +                     | +                  |
-| -       | -        | -                  | -                             | -                     | -                  |
-| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
-| /       | /        | /                  | /                             | /                     | /                  |
-| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
-| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
-| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
-| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
-| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |
+| Nushell | SQL      | Python             | .NET LINQ (C#)       | PowerShell             | Bash               |
+| ------- | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
+| ==      | =        | ==                 | ==                   | -eq, -is               | -eq                |
+| !=      | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
+| <       | <        | <                  | <                    | -lt                    | -lt                |
+| <=      | <=       | <=                 | <=                   | -le                    | -le                |
+| >       | >        | >                  | >                    | -gt                    | -gt                |
+| >=      | >=       | >=                 | >=                   | -ge                    | -ge                |
+| =~      | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
+| !~      | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
+| +       | +        | +                  | +                    | +                      | +                  |
+| -       | -        | -                  | -                    | -                      | -                  |
+| \*      | \*       | \*                 | \*                   | \*                     | \*                 |
+| /       | /        | /                  | /                    | /                      | /                  |
+| \*\*    | pow      | \*\*               | Power                | Pow                    | \*\*               |
+| in      | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
+| not-in  | not in   | not in             | Except               | -NotIn                 |                    |
+| and     | and      | and                | &&                   | -And, &&               | -a, &&             |
+| or      | or       | or                 | \|\|                 | -Or, \|\|              | -o, \|\|           |
diff --git a/ja/book/nushell_operator_map.md b/ja/book/nushell_operator_map.md
index dd169480994..9a736fa97c4 100644
--- a/ja/book/nushell_operator_map.md
+++ b/ja/book/nushell_operator_map.md
@@ -4,22 +4,21 @@
 
 注: Nu が 0.14.1 以降であることを想定しています。
 
-| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
-| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
-| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
-| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
-| <       | <        | <                  | <                             | -lt                   | -lt                |
-| <=      | <=       | <=                 | <=                            | -le                   | -le                |
-| >       | >        | >                  | >                             | -gt                   | -gt                |
-| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
-| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
-| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
-| +       | +        | +                  | +                             | +                     | +                  |
-| -       | -        | -                  | -                             | -                     | -                  |
-| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
-| /       | /        | /                  | /                             | /                     | /                  |
-| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
-| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
-| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
-| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
-| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |
+| Nushell | SQL      | Python             | .Net LINQ (C#)       | PowerShell             | Bash               |
+| ------- | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
+| ==      | =        | ==                 | ==                   | -eq, -is               | -eq                |
+| !=      | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
+| <       | <        | <                  | <                    | -lt                    | -lt                |
+| <=      | <=       | <=                 | <=                   | -le                    | -le                |
+| >       | >        | >                  | >                    | -gt                    | -gt                |
+| >=      | >=       | >=                 | >=                   | -ge                    | -ge                |
+| =~      | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
+| !~      | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
+| +       | +        | +                  | +                    | +                      | +                  |
+| -       | -        | -                  | -                    | -                      | -                  |
+| \*      | \*       | \*                 | \*                   | \*                     | \*                 |
+| /       | /        | /                  | /                    | /                      | /                  |
+| in      | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
+| not-in  | not in   | not in             | Except               | -NotIn                 |                    |
+| and     | and      | and                | &&                   | -And                   | -a, &&             |
+| or      | or       | or                 | \|\|                 | -Or                    | -o, \|\|           |
diff --git a/ko/book/nushell_operator_map.md b/ko/book/nushell_operator_map.md
index 850cd1f35f8..c83d35ab44d 100644
--- a/ko/book/nushell_operator_map.md
+++ b/ko/book/nushell_operator_map.md
@@ -10,22 +10,22 @@ next:
 
 참고: 이 표는 Nu 0.14.1 이상을 가정합니다.
 
-| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
-| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
-| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
-| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
-| <       | <        | <                  | <                             | -lt                   | -lt                |
-| <=      | <=       | <=                 | <=                            | -le                   | -le                |
-| >       | >        | >                  | >                             | -gt                   | -gt                |
-| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
-| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
-| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
-| +       | +        | +                  | +                             | +                     | +                  |
-| -       | -        | -                  | -                             | -                     | -                  |
-| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
-| /       | /        | /                  | /                             | /                     | /                  |
-| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
-| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
-| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
-| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
-| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |
+| 누셸   | SQL      | 파이썬             | .NET LINQ (C#)       | PowerShell             | Bash               |
+| ------ | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
+| ==     | =        | ==                 | ==                   | -eq, -is               | -eq                |
+| !=     | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
+| <      | <        | <                  | <                    | -lt                    | -lt                |
+| <=     | <=       | <=                 | <=                   | -le                    | -le                |
+| >      | >        | >                  | >                    | -gt                    | -gt                |
+| >=     | >=       | >=                 | >=                   | -ge                    | -ge                |
+| =~     | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
+| !~     | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
+| +      | +        | +                  | +                    | +                      | +                  |
+| -      | -        | -                  | -                    | -                      | -                  |
+| \*     | \*       | \*                 | \*                   | \*                     | \*                 |
+| /      | /        | /                  | /                    | /                      | /                  |
+| \*\*   | pow      | \*\*               | Power                | Pow                    | \*\*               |
+| in     | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
+| not-in | not in   | not in             | Except               | -NotIn                 |                    |
+| and    | and      | and                | &&                   | -And, &&               | -a, &&             |
+| or     | or       | or                 | \|\|                 | -Or, \|\|              | -o, \|\|           |
diff --git a/zh-CN/book/nushell_operator_map.md b/zh-CN/book/nushell_operator_map.md
index 3e5c7d06652..7588af72cd9 100644
--- a/zh-CN/book/nushell_operator_map.md
+++ b/zh-CN/book/nushell_operator_map.md
@@ -4,22 +4,22 @@
 
 注意：此表针对 Nu 0.14.1 或更高版本。
 
-| Nushell | SQL      | Python             | .NET (C#)                     | PowerShell            | Bash               |
-| ------- | -------- | ------------------ | ----------------------------- | --------------------- | ------------------ |
-| ==      | =        | ==                 | ==                            | -eq                   | -eq                |
-| !=      | !=, <>   | !=                 | !=                            | -ne                   | -ne                |
-| <       | <        | <                  | <                             | -lt                   | -lt                |
-| <=      | <=       | <=                 | <=                            | -le                   | -le                |
-| >       | >        | >                  | >                             | -gt                   | -gt                |
-| >=      | >=       | >=                 | >=                            | -ge                   | -ge                |
-| =~      | like     | re, in, startswith | Regex.IsMatch                 | -cmatch               | =~                 |
-| !~      | not like | not in             | !Regex.IsMatch                | -cnotmatch            | ! "str1" =~ "str2" |
-| +       | +        | +                  | +                             | +                     | +                  |
-| -       | -        | -                  | -                             | -                     | -                  |
-| \*      | \*       | \*                 | \*                            | \*                    | \*                 |
-| /       | /        | /                  | /                             | /                     | /                  |
-| \*\*    | pow      | \*\*               | Math.Pow                      | \[math\]::Pow         | \*\*               |
-| in      | in       | re, in, startswith | str.Contains, collection.Any  | str.Contains, -in     | case in            |
-| not-in  | not in   | not in             | !str.Contains, collection.Any | !str.Contains, -notin |                    |
-| and     | and      | and                | &&                            | -and, &&              | -a, &&             |
-| or      | or       | or                 | \|\|                          | -or, \|\|             | -o, \|\|           |
+| Nushell | SQL      | Python             | .NET LINQ (C#)       | PowerShell             | Bash               |
+| ------- | -------- | ------------------ | -------------------- | ---------------------- | ------------------ |
+| ==      | =        | ==                 | ==                   | -eq, -is               | -eq                |
+| !=      | !=, <>   | !=                 | !=                   | -ne, -isnot            | -ne                |
+| <       | <        | <                  | <                    | -lt                    | -lt                |
+| <=      | <=       | <=                 | <=                   | -le                    | -le                |
+| >       | >        | >                  | >                    | -gt                    | -gt                |
+| >=      | >=       | >=                 | >=                   | -ge                    | -ge                |
+| =~      | like     | re, in, startswith | Contains, StartsWith | -like, -contains       | =~                 |
+| !~      | not like | not in             | Except               | -notlike, -notcontains | ! "str1" =~ "str2" |
+| +       | +        | +                  | +                    | +                      | +                  |
+| -       | -        | -                  | -                    | -                      | -                  |
+| \*      | \*       | \*                 | \*                   | \*                     | \*                 |
+| /       | /        | /                  | /                    | /                      | /                  |
+| \*\*    | pow      | \*\*               | Power                | Pow                    | \*\*               |
+| in      | in       | re, in, startswith | Contains, StartsWith | -In                    | case in            |
+| not-in  | not in   | not in             | Except               | -NotIn                 |                    |
+| and     | and      | and                | &&                   | -And, &&               | -a, &&             |
+| or      | or       | or                 | \|\|                 | -Or, \|\|              | -o, \|\|           |