Powershell | Verify if the script is running as Administrator

Sometimes it is useful to verify if a running script is running under Administrator privileges, here is how to do it.

write-host  `n`r'Running as Administrator? '
[bool](([System.Security.Principal.WindowsIdentity]::GetCurrent()).groups -match "S-1-5-32-544")


# Check if running as administrator
$isAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

if (-not $isAdmin) {
    Write-Host "Not running as administrator. Relaunching with elevated privileges..."
  
    # Relaunch script with elevated privileges
    $scriptPath = $MyInvocation.MyCommand.Definition
    Start-Process powershell -ArgumentList "-NoProfile -ExecutionPolicy Bypass -File `"$scriptPath`"" -Verb RunAs
    exit
}

Write-Host "Running with administrator privileges."