Question

我正在尝试创建一个脚本，主要任务是每次将文件添加到文件夹时执行一些PS命令。我使用＆＃34;做＆＃34;它将循环进入程序。但是当我将文件添加到文件夹中时，命令只执行一次，然后我收到新添加文件的错误。下面是我的代码示例你知道我怎么能这样做吗？提前谢谢！

do{
Dir *.txt | rename-item -newname { [io.path]::ChangeExtension($_.name, "eml")}
Invoke-Item C:\Users\*.eml
Remove-Item C:\Users\*.eml
} until ("condition that is never met")

Answer 1

您正在寻找FileSystemWatcher Register-ObjectEvent在添加文件时收到通知：

$folder = 'c:\test'
$filter = '*.txt'
$fsw = New-Object IO.FileSystemWatcher $folder, $filter -Property @{ IncludeSubdirectories = $true}

$onCreated = Register-ObjectEvent $fsw Created -SourceIdentifier FileCreated -Action {
    $path = $Event.SourceEventArgs.FullPath
    # A file has been added, run your ps commands here. e. g.
    write-host $path
}

要取消注册该事件，请使用：

Unregister-Event -SourceIdentifier FileCreated

每次将文件添加到文件夹时运行PS命令

1 个答案: