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Thought I would just share this new version:

Function prompt {

   $windowsIdentity = [System.Security.Principal.WindowsIdentity]::GetCurrent()

   $windowsPrincipal = new-object 'System.Security.Principal.WindowsPrincipal' $windowsIdentity

  $windowTitle = "PowerShell - `"$(get-location)`""

   [bool] $isAdministrator = $windowsPrincipal.IsInRole("Administrators") -eq 1

   if ($windowTitle -ne $host.ui.rawui.windowtitle) {

      if ($isAdministrator) {

         $host.UI.RawUI.WindowTitle = "[ADMINISTRATOR] " + $windowTitle

      } else {

         $host.UI.RawUI.WindowTitle = $windowTitle

      }

   }

  

   Write-Host "$([DateTime]::Now.ToString('HH:mm:ss'))" -nonewline -backgroundcolor White -foregroundcolor Black

   Write-Host ' ' -nonewline

   if ($isAdministrator) {

      Write-Host ("$(get-location)") -backgroundcolor Red

   } else {

      Write-Host ("$(get-location)") -backgroundcolor Blue

   }

   '> '

}

Function Display-EnvironmentVariable {

   Get-ChildItem ENV: | sort-object -property Name | format-table -autosize

}

Function RAlias {

   param([string] $command = $(throw 'Enter the command to search the alias for'))

   alias | where {$_.Definition -eq "$command"}

}

set-alias dev Display-EnvironmentVariable

$env:MSSdk = "$env:SystemDrive\Program Files\Microsoft SDKs\Windows\v6.0"

$env:SdkTools = "$env:MSSdk\Bin"

$env:OSLibraries = "$env:MSSdk\Lib"

$env:OSIncludes = "$env:MSSdk\Include;$env:MSSdk\Include\gl"

$env:VCTools = "$env:MSSdk\VC\Bin"

$env:VCLibraries = "$env:MSSdk\VC\Lib"

$env:VCIncludes = "$env:MSSdk\VC\Include;$env:MSSdk\VC\Include\Sys"

$env:ReferenceAssemblies = "$env:ProgramFiles\Reference Assemblies\Microsoft\WinFX\v3.0"

$env:Lib = "$env:VCLibraries;$env:OSLibraries;$env:Lib"

$env:Include = "$env:VCIncludes;$env:OSIncludes;$env:Include"

$env:CPU = "i386"

$env:APPVER = "6.0"

$env:TARGETOS = "WINNT"

$env:FxTools= "$env:windir\Microsoft.NET\Framework\v2.0.50727"

$env:Path = "$env:VCTools;$env:SdkTools;$env:FxTools;$env:SystemDrive\Program Files\Debugging Tools for Windows;$env:Path"

$env:ReferenceAssemblies = "$env:ProgramFiles\Reference Assemblies\Microsoft\WinFX\v3.0"