Nu Shell Command Equivalents in Other Languages

1st chunk of `book/nushell_map.md`

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# Nu map from other shells and domain specific languages

The idea behind this table is to help you understand how Nu builtins and plugins relate to other known shells and domain specific languages. We've tried to produce a map of relevant Nu commands and what their equivalents are in other languages. Contributions are welcome.

| Nushell                                                    | SQL                           | .Net LINQ (C#)                                       | PowerShell (without external modules)      | Bash                                            |
| ---------------------------------------------------------- | ----------------------------- | ---------------------------------------------------- | ------------------------------------------ | ----------------------------------------------- |
| [`alias`](/commands/docs/alias.md)                         |                               |                                                      | `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`                                            |
| [`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`                                            |
| [`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`                                  |

Title: Nu Shell Command Equivalents in Other Languages

Summary

This section provides a table that maps Nu shell builtins and plugins to their equivalents in other languages such as SQL, .Net LINQ (C#), PowerShell, and Bash. The table includes Nu commands like `alias`, `append`, `math avg`, `cd`, `clear`, `config`, `cp`, `date`, `du`, `each`, `exit`, and `http`, and their corresponding commands or functionalities in the listed languages.