[powershell] Path to Powershell.exe (v 2.0)

Where is the Powershell (version 2.0) located? What is the path to Powershell.exe? I have Windows Server 2008 and Powershell installed. When I look at this folder:

PS C:\Windows\System32\WindowsPowerShell> dir


    Directory: C:\Windows\System32\WindowsPowerShell


Mode                LastWriteTime     Length Name
----                -------------     ------ ----
d----         20.4.2010     17:09            v1.0

I have only Powershell v1.0. But when I type

PS C:\> $Host.version

Major  Minor  Build  Revision
-----  -----  -----  --------
2      0      -1     -1


PS C:\>

It shows that I have v2.0 installed.

Here is one way...

(Get-Process powershell | select -First 1).Path

Here is possibly a better way, as it returns the first hit on the path, just like if you had ran Powershell from a command prompt...

(Get-Command powershell.exe).Definition

I think $PsHome has the information you're after?

PS .> $PsHome
C:\Windows\System32\WindowsPowerShell\v1.0

PS .> Get-Help about_automatic_variables

TOPIC
    about_Automatic_Variables ...

It is always C:\Windows\System32\WindowsPowershell\v1.0. It was left like that for backward compability is what I heard or read somewhere.