您能否从powershell中的PostCommandLookupAction访问/修改参数?

您能否从powershell中的PostCommandLookupAction访问/修改参数?,powershell,powershell-3.0,executioncontext,Powershell,Powershell 3.0,Executioncontext,挂接命令的所有实例,如cd,并希望验证和可能修改输入 $executionContext.SessionState.InvokeCommand.PostCommandLookupAction = { param($CommandName, $CommandLookupEventArgs) #Only hook cd if($CommandLookupEventArgs.CommandOrigin -eq "Runspace" -and $CommandName -eq "

挂接命令的所有实例,如
cd
,并希望验证和可能修改输入

$executionContext.SessionState.InvokeCommand.PostCommandLookupAction = {
    param($CommandName, $CommandLookupEventArgs)
    #Only hook cd
    if($CommandLookupEventArgs.CommandOrigin -eq "Runspace" -and $CommandName -eq "cd"){
       //Do modification here
    }
}

是否有一个变量提供修改传递给cd的参数的访问权限?

如果指定
CommandScriptBlock
,则参数将在该脚本块内可用,例如:

$ExecutionContext.InvokeCommand.PostCommandLookupAction = {
    param($s,$ea) 
    if ($ea.commandname -eq 'cd') { 
        write-host "Intercpeting CD command"
        $ea.CommandScriptBlock = {Set-Location @args}
        $ea.StopSearch = $true
    } 
}