for Unix converts

powershell_fu.md

Note: PowerShell is object based, as opposed to byte stream based Unix utilities. This means text operations aren't that common, and also means many idioms aren't directly translateable.

Equivalents of common commands and idioms

• var=text -> $var = object
• cat file1 file2 file3 > target -> gc -Encoding Byte file1,file2,file3 | sc -Encoding Byte target (binary concatenation, with text files you can specify different encoding or let it guess)
• curl -> iwr (Invoke-WebRequest)
• date -> date (Get-Date)
• man command-name -> help command-name (Get-Help)
• ps -> ps (Get-Process)
• seq 10 -> 1..10
• sort -> sort (Sort-Object)
• uniq -> gu (Get-Unique)
• unset var -. rv var (Remove-Variable)

.NET interop

Create a new object:

# equivalent to C#'s var d = new DateTime(2015, 3, 1);
2015, 3, 1 is an array here
$d = New-Object DateTime 2015, 3, 1

Create an object of a generic class:

# equivalent to C#'s var l = new SortedList<string, int>();
$l = New-Object 'Collections.Generic.SortedList[string, int]'

Call a method:

$d = $d.AddHours(4)

Access a property:

$month = $d.Month