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我可以自定义PowerShell中的“未识别为Cmdlet名称”错误吗?

powershell-core command-line powershell

9

mikemaccana · 技术社区 · 7 年前

假设我在命令行中输入了错别字:

whih foo

PowerShell返回:

whih : The term 'whih' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ whih mocha
+ ~~~~
+ CategoryInfo          : ObjectNotFound: (whih:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

长消息对于脚本很有用,但是对于交互式shell的使用,我想用一些较短的内容来包装它,例如:

'whih' isn't a cmdlet, function, script file, or operable program.

我可以把错误包装起来改短一点吗?

1 回复 | 直到 7 年前

1

10

Mathias R. Jessen 7 年前

CommandNotFoundException a CommandNotFoundAction

$ExecutionContext.InvokeCommand.CommandNotFoundAction = {
  param($Name,[System.Management.Automation.CommandLookupEventArgs]$CommandLookupArgs)  

  # Check if command was directly invoked by user
  # For a command invoked by a running script, CommandOrigin would be `Internal`
  if($CommandLookupArgs.CommandOrigin -eq 'Runspace'){
    # Assign a new action scriptblock, close over $Name from this scope 
    $CommandLookupArgs.CommandScriptBlock = {
      Write-Warning "'$Name' isn't a cmdlet, function, script file, or operable program."
    }.GetNewClosure()
  }
}