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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.
Note: this table assumes Nu 0.43 or later.
| Nushell | SQL | .Net LINQ (C#) | PowerShell (without external modules) | Bash |
| ---------------------- | ----------------------------- | ---------------------------------------------------- | ------------------------------------------ | ----------------------------------------------- |
| alias | | | alias | alias |
| append | | Append | -Append | |
| math avg | avg | Average | Measure-Object, measure | |
| calc, `<math expression>` | math operators | Aggregate, Average, Count, Max, Min, Sum | | bc |
| cd | | | Set-Location, cd | cd |
| clear | | | Clear-Host | clear |
| config | | | $Profile | vi .bashrc, .profile |
| cp | | | Copy-Item, cp, copy | cp |
| date | NOW() / getdate() | DateTime class | Get-Date | date |
| du | | | | du |
| each | cursor | | ForEach-Object, foreach, for | |
| exit | | | exit | exit |
| http | | HttpClient,WebClient, HttpWebRequest/Response | Invoke-WebRequest | wget |
| first | top, limit | First, FirstOrDefault | Select-Object -First | head |
| format | | String.Format | String.Format | |
| from | import flatfile, openjson, cast(variable as xml) | | Import/ConvertFrom-{Csv,Xml,Html,Json} | |
| get | | Select | (cmd).column | |
| group-by | group by | GroupBy, group | Group-Object, group | |
| help | sp_help | | Get-Help, help, man | man |
| history | | | Get-History, history | history |
| is-empty | is null | String.InNullOrEmpty | String.InNullOrEmpty | |
| kill | | | Stop-Process, kill | kill |
| last | | Last, LastOrDefault | Select-Object -Last | tail |
| length | count | Count | Measure-Object, measure | wc |
| lines | | | File.ReadAllLines | |
| ls | | | Get-ChildItem, dir, ls | ls |
| mkdir | | | mkdir, md | mkdir |
| mv | | | Move-Item, mv, move, mi | mv |
| nth | limit x offset y, rownumber = | ElementAt | [x], indexing operator, ElementAt | |
| open | | | Get-Content, gc, cat, type | cat |
| print | print, union all | | Write-Output, write | echo |
| transpose | pivot | | | |
| ps | | | Get-Process, ps, gps | ps |
| pwd | | | Get-Location, pwd | pwd |
| range | | Range | 1..10, 'a'..'f' | |
| reduce | | Aggregate | | |
| rename | | | Rename-Item, ren, rni | mv |
| reverse | | Reverse | [Array]::Reverse($var) | |
| rm | | | Remove-Item, del, erase, rd, ri, rm, rmdir | rm |
| save | | | Write-Output, Out-File | > foo.txt |
| select | select | Select | Select-Object, select | |
| shuffle | | Random | Sort-Object {Get-Random} | |
| size | | | Measure-Object, measure | wc |
| skip | where row_number() | Skip | Select-Object -Skip | |
| skip until | | SkipWhile | | |
| skip while | | SkipWhile | | |
| sort-by | order by | OrderBy, OrderByDescending, ThenBy, ThenByDescending | Sort-Object, sort | |
| split-by | | Split | Split | |
| str | string functions | String class | String class | |
| str join | concat_ws | Join | Join-String | |
| str trim | rtrim, ltrim | Trim, TrimStart, TrimEnd | Trim | |
| sum | sum | Sum | Measure-Object, measure | |
| sys | | | Get-ComputerInfo | uname, lshw, lsblk, lscpu, lsusb, hdparam, free |
| table | | | Format-Table, ft, Format-List, fl | |
| take | top, limit | Take | Select-Object -First | head |
| take until | | TakeWhile | | |
| take while | | TakeWhile | | |
| timeit | | | Measure-Command | time |
| to | | | Export/ConvertTo-{Csv,Xml,Html,Json} | |
| touch | | | Set-Content | touch |
| uniq | distinct | Distinct | Get-Unique, gu | uniq |
| upsert | As | | | |
| version | select @@version | | $PSVersionTable | |
| with-env | | | $env:FOO = 'bar' | export foo = "bar" |
| where | where | Where | Where-Object, where, "?" operator | |
| which | | | | which |
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