Detection logic for PowerShell installation

re: Detection logic for PowerShell installation

powershell makes me sad — Wed, 13 Jun 2012 15:53:21 GMT

How about you write a script that tells us which version of powershell to install via OS and then tries to install it. 4 tries of my OS (windows 7 64 bit) and each one gives me the 'this install is not applicable to your system' everytime.

You know what doesn't give me this error? EVERY OTHER scripting language!

re: Detection logic for PowerShell installation

richard semock — Wed, 22 Jun 2011 14:39:06 GMT

How is PS removed from win2003? KB 139 & 141 are not found in add/remove updates and 2003-sp2 is removed but PS aritfacts remain in registry and in system32 folder.

re: Detection logic for PowerShell installation

David M — Thu, 25 Nov 2010 17:40:26 GMT

I see the team have addressed this in version 2 with the $psversiontable structure.

The foillowing code should do the trick:

if ( $psversiontable ) { 'v2+' } else { 'v1' }

re: Detection logic for PowerShell installation

David M — Fri, 09 Jul 2010 19:32:21 GMT

Is there a simple variable that can be used for version detection? I'm thinking of something like:

if ( $psVersion -lt 2 )

{ 'Powershell version must be 2 or greater' }

else

{ 'Processing x' }

re: Detection logic for PowerShell installation

Ken — Sat, 10 Oct 2009 10:34:46 GMT

How do we detect PowerShell 2.0 (but not 1.0) in a manner that won't break when PowerShell 3.0 is released?

re: Detection logic for PowerShell installation

cz9qvh — Mon, 06 Jul 2009 19:39:00 GMT

FYI, the ps installer won't set HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\PowerShell\1\Insall = 1... so if your app is 32 bit and running on 64 bit windows then this method won't work.

re: Detection logic for PowerShell installation

PowerShell Team — Fri, 26 Jun 2009 15:46:15 GMT

@Daniel - thanks. Fixed now.

Enjoy!

Jeffrey Snover [MSFT]

Distinguished Engineer

Visit the Windows PowerShell Team blog at: http://blogs.msdn.com/PowerShell

Visit the Windows PowerShell ScriptCenter at: http://www.microsoft.com/technet/scriptcenter/hubs/msh.mspx

re: Detection logic for PoweShell installation

Daniel — Fri, 26 Jun 2009 10:28:35 GMT

Did you really spell PowerShell wrong in the article title!!

re: Detection logic for PoweShell installation

Pter — Thu, 25 Jun 2009 17:30:56 GMT

And what should we use to test it VBScript? LOLL