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Does powershell have an equivalent to the which command found in most (if not all) unix shells?

There are a number of times I'd like to know the location of something I'm running from the command line. In unix I just do which <command> and it tells me. I can't find an equivalent in Powershell.

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4 Answers 4

up vote 15 down vote accepted

This was asked and answered on Stack Overflow: Equivalent of *Nix ‘which’ command in Powershell?

The very first alias I made once I started customizing my profile in powershell was 'which'.

New-Alias which get-command

To add this to your profile, type this:

"`nNew-Alias which get-command" | add-content $profile The `n is to ensure it will start as a new line.
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Exactly what I was looking for. thanks! –  Herms Sep 2 '09 at 19:17

As of PowerShell 3.0, you can do

(Get-Command cmd).Path

Which also has the benefit over vanilla Get-Command of returning a System.String so you get a clean *nixy single line output like you may be used to. Using the gcm alias, we can take it down to 11 characters.

(gcm cmd).Path
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If Get-Command finds multiple results, it returns an array. Additionally, if the command it finds is not an executable, Path is undefined ($null). This makes the answer here impractical for general use without heavy modification. For a good example of both these cases, try Get-Command where. –  jpmc26 May 30 '14 at 17:14
function which([string]$cmd) {gcm -ErrorAction "SilentlyContinue" $cmd | ft Definition}
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Also answered in 2008: Is there an equivalent of 'which' on windows?

Try the where command if you've installed a Resource Kit: http://ss64.com/nt/where.html

Most important parts of the answer:

Windows Server 2003 and later provide the WHERE command which does some of what which does, though it matches all types of files, not just executable commands.


In Windows PowerShell you must type where.exe.

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