Powershell小技巧之查找脚本中的函数

要快速获取你ps脚本库中所有文件的函数名，你可以这样做：

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
         $_
      }
   }
}

这将扫描出你用户配置文件夹下的所有ps脚本中的函数：

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    
(...)

将结果用管道传给out-gridview 将能得到更完美的信息。

支持ps3.0及以后