[powershell] Running a command as Administrator using PowerShell?

I am using the solution below. It handles stdout/stderr via transcript feature and passes exit code correctly to parent process. You need to adjust transcript path/filename.

If (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{ 
  echo "* Respawning PowerShell child process with elevated privileges"
  $pinfo = New-Object System.Diagnostics.ProcessStartInfo
  $pinfo.FileName = "powershell"
  $pinfo.Arguments = "& '" + $myinvocation.mycommand.definition + "'"
  $pinfo.Verb = "RunAs"
  $pinfo.RedirectStandardError = $false
  $pinfo.RedirectStandardOutput = $false
  $pinfo.UseShellExecute = $true
  $p = New-Object System.Diagnostics.Process
  $p.StartInfo = $pinfo
  $p.Start() | Out-Null
  $p.WaitForExit()
  echo "* Child process finished"
  type "C:/jenkins/transcript.txt"
  Remove-Item "C:/jenkins/transcript.txt"
  Exit $p.ExitCode
} Else {
  echo "Child process starting with admin privileges"
  Start-Transcript -Path "C:/jenkins/transcript.txt"
}

# Rest of your script goes here, it will be executed with elevated privileges