start_elevated.ps1

# origin: https://github.com/majkinetor/posh/blob/master/MM_Admin/Start-ElevatedProcess.ps1

#requires -version 2

<#
.SYNOPSIS
    Runs a process / command as admin.

.DESCRIPTION
    Runs a process with elevated privileges. Has the ability to open a new
    powershell window. Can run legacy programs as admin cmd.

.EXAMPLE
    sudo

    Opens a new powershell window with the administrative privileges and sets
    the current directory to the one of the calling shell.

.EXAMPLE
    sudo -Last -Exit

    Runs the last powershell command with the adminsitrative privileges and
    keeps the shell from closing.

.EXAMPLE
    Start-ElevatedProcess {ps iexplore | kill} -Wait -WindowStyle Hidden

    Opens a new powershell window with administrative privileges to stops all
    internet explorer process. Wait for action to return but hide the window.

.EXAMPLE
    Start-ElevatedProcess  {C:\Windows\System32\Drivers\etc\hosts} -Program notepad

    Opens the host file as admin in notepad.exe.

#>
function Start-ElevatedProcess {
  [CmdletBinding(DefaultParameterSetName = 'Default')]
  param(
    # Optional script block to execute or a program argument
    [Parameter(Position = 0,ParameterSetName = 'command')]
    [scriptblock]$Command,

    # Optional application to elevate, by default 'powershell.exe'.
    [Parameter(Position = 1)]
    [string]$Program = (Join-Path -Path $PsHome -ChildPath 'powershell.exe'),

    # Path to script file, Program must be 'powershell.exe' or 'cmd.exe'.
    [Parameter(Position = 0,ParameterSetName = 'script')]
    [ValidateScript({ if (Test-Path -Path $_ -PathType Leaf) { $true } else { throw "$_ is not a valid Path" } })]
    [string]$Script,

    # Run previous powershell command as admin. Commands starting with 'sudo' and 'Start-ElevatedProcess' are ignored.
    [Parameter(ParameterSetName = 'last')]
    [switch]$Last,

    # Close the eveleated shell when finished.
    [Parameter(ParameterSetName = 'last')]
    [Parameter(ParameterSetName = 'command')]
    [Parameter(ParameterSetName = 'script')]
    [switch]$Exit,

    # Wait for process to exit before returning
    [switch]$Wait,

    # Window style: Normal, Maximized, Minimized or Hidden
    [ValidateSet('Normal','Maximized','Minimized','Hidden')]
    [string]$WindowStyle = 'Normal'
  )

  $params = @{
    #WorkingDirectory = $pwd         #doesn't work with RunAs verb so I used 'cd $pwd' with command
    FilePath = $Program
    Verb = 'RunAs'
    ErrorAction = 'Stop'
    Wait = $false
    WindowStyle = $WindowStyle
  }

  $argList = @()
  if ($program -match '[\\]?powershell(.exe)?$') {
    if (!$Exit) { $argList += '-NoExit' }

    $cmd = '-Command "' + "cd '$pwd'" + '"'
    if ($Command) { $cmd += "; {0}" -f $Command }
    if ($Last) {
      $l = h | sort -Desc | ? { $_.CommandLine -notmatch '^\s*(sudo|Start-ElevatedProcess)\s*' } | select -First 1 -Expand CommandLine
      $cmd += "; {0}" -f $l
    }
    $argList += $cmd

    if ($Script) { $argList += "-File ""{0}""" -f (Resolve-Path $script) }
  }
  elseif ($program -match '[\\]?cmd(.exe)?$') {
    $a = '/K';
    if ($Exit) { $a = '/C' }
    if ($Command) { $argList += "$a ""cd ""$pwd"" & $command""" }
    if ($Script) { $argList += "$a ""{0}""" -f (Resolve-Path $script) }
  }
  else {
    if ($Command) { $argList += $Command }
  }

  if ($Wait) { $params.Wait = $true }

  if ($argList -and $argList.Count) { $params.ArgumentList = $argList }
  Write-Verbose $($params | Out-String)
  Start-Process @params
}

Set-Alias sudo Start-ElevatedProcess