PowerShell 技能连载 - 查找 PowerShell 函数

适用于 PowerShell 3.0 或更高版本

要快速扫描您的 PowerShell 脚本仓库并在其中查找某个函数，请使用以下过滤器：

filter Find-Function
{
   $path = $_.FullName
   $lastwrite = $_.LastWriteTime
   $text = Get-Content -Path $path

   if ($text.Length -gt 0)
   {

      $token = $null
      $errors = $null
      $ast = [System.Management.Automation.Language.Parser]::ParseInput($text, [ref] $token, [ref] $errors)
      $ast.FindAll({ $args[0] -is [System.Management.Automation.Language.FunctionDefinitionAst] }, $true) |
      Select-Object -Property Name, Path, LastWriteTime |
      ForEach-Object {
         $_.Path = $path
         $_.LastWriteTime = $lastwrite
         $_
      }
   }
}

以下是扫描您的用户配置文件中所有定义了函数的 PowerShell 脚本的方法：

PS> dir $home -Filter *.ps1 -Recurse -Exclude *.ps1xml | Find-Function

  Name                       Path                       LastWriteTime
  ----                       ----                       -------------
  Inject-LogonCredentials    C:\Users\Tobias\Desktop... 06.01.2014 02:43:00
  Test-Command               C:\Users\Tobias\Desktop... 06.03.2014 10:17:02
  Test                       C:\Users\Tobias\Desktop... 30.01.2014 09:32:20
  Get-WebPictureOriginal     C:\Users\Tobias\Desktop... 11.12.2013 11:37:53
  Get-ConnectionString       C:\Users\Tobias\Documen... 23.05.2014 10:49:09
  Convert-SID2User           C:\Users\Tobias\Documen... 23.05.2014 15:33:06
  Lock-Screen                C:\Users\Tobias\Documen... 19.03.2014 12:51:54
  Show-OpenFileDialog        C:\Users\Tobias\Documen... 16.05.2014 13:42:16
  Show-UniversalData         C:\Users\Tobias\Documen... 16.05.2014 13:23:20
  Start-TimebombMemory       C:\Users\Tobias\Documen... 23.05.2014 09:12:28
  Stop-TimebombMemory        C:\Users\Tobias\Documen... 23.05.2014 09:12:28
  (...)

只需要将结果通过管道输出到 Out-GridView 就能查看完整的信息。