Nu Command Equivalents in Other Languages (Continued)

5th chunk of `book/nushell_map.md`

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| [`str join`](/commands/docs/str_join.md)                   | `concat_ws`                   | `Join`                                               | `Join-String`                              |                                                 |
| [`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 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`                                          |
| [`take until`](/commands/docs/take_until.md)               |                               | `TakeWhile`                                          |                                            |                                                 |
| [`take while`](/commands/docs/take_while.md)               |                               | `TakeWhile`                                          |                                            |                                                 |

Title: Nu Command Equivalents in Other Languages (Continued)

Summary

This section continues listing Nu shell commands and their equivalents in SQL, .Net LINQ (C#), PowerShell, and Bash. Commands covered include string manipulation (`str join`, `str trim`), mathematical operations (`math sum`), system information retrieval (`uname`, `sys disks`, `sys mem`), table formatting (`table`), and sequence selection (`take`, `take until`, `take while`).