How can I tell in my scripts if PowerShell is running with administrator privileges?
I need to know because I'm trying to run a program that requires the ability to open protected ports.
[bool](([System.Security.Principal.WindowsIdentity]::GetCurrent()).groups -match "S-1-5-32-544")
Breaking apart what this does:
[bool]- Cast the end result to a
[System.Security.Principal.WindowsIdentity]::GetCurrent()- Retrieves the
WindowsIdentityfor the currently running user.
(...).groups- Access the
groupsproperty of the identity to find out what user groups the identity is a member of.
-match "S-1-5-32-544"checks to see if
groupscontains the Well Known SID of the Administrators group, the identity will only contain it if "run as administrator" was used.
([Security.Principal.WindowsPrincipal] ` [Security.Principal.WindowsIdentity]::GetCurrent() ` ).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
This retrieves the current Windows identity and returns True if the current identity has the Administrator role (i.e., is running elevated).
In Powershell 4.0 you can use requires at the top of your script:
The script 'MyScript.ps1' cannot be run because it contains a "#requires" statement for running as Administrator. The current Windows PowerShell session is not running as Administrator. Start Windows PowerShell by using the Run as Administrator option, and then try running the script again.