====== Some common tasks in Windows PowerShell ======
  * suppress output of Cmdlets (e.g. ''new-item''): pipe to ''out-null''
  * suppress error output of binaries: ''svn log 2> $null''
  * suppress error messages (even those that won't go away with ''-ea 0''): ''$ErrorActionPreference = "silentlycontinue"''
  * check if an error occured (e.g. after cmdlet with suppressed output): ''if (!$?)''
  * ''copy-item'' throws an ''UnauthorizedAccessException'': use parameter ''-force''
  * RegEx: <code posh>$m = [regex]::matches("test", "([a-z]+)");
if ($m[0].Success)
{
  $str = $m[0].Groups[1].ToString();
}</code>
  * get name and path of the currently running script: <code posh>$scriptName = $MyInvocation.MyCommand.Name;
$scriptPath = split-path $MyInvocation.MyCommand.Path;</code>