使用FileSystemWatcher监视目录 [英] Monitor a directory with FileSystemWatcher

问题描述

我有一个正在被某些程序填充的目录.我想监视此目录，并检查文件是否不断添加到该目录中.如果例如5分钟，没有文件被添加到目录，我想得到通知.文件也将被删除，但我只需要关心新文件.
该脚本每三个小时运行大约20分钟.
FileSystemWatcher的代码:

I have a directory which is getting filled by some program. I would like to monitor this directory and check if files are continuously getting added to the directory. If for Example for 5 min no file is getting added to the direcotry I want to get notified. The Files are also getting deleted but i just have to care about the new files.
The script would run for about 20 min every three hours.
The code for the FileSystemWatcher:

$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = "C:\temp\test"
$watcher.IncludeSubdirectories = $true
$watcher.EnableRaisingEvents = $true

$created = Register-ObjectEvent $watcher "Created" -Action {
   write-host "Created: $($eventArgs.FullPath)"
   Get-Date -Format "HH:mm:ss" | Out-File "C:\temp\log.txt" -Append
}

我不知道该如何做到这一点，我很感谢每一次的投入.

I don't know how i could achive this, and I'm thankful for every input.

推荐答案

PowerShell脚本不太适合连续运行并报告事件.

PowerShell scripts are not well suited to run continuously and report on events.

一种实现所需目标的方法是使用如下脚本:

One way to achieve what you want is using a script like this:

[DateTime] $LastWriteTime = (Get-ChildItem -Path "C:\temp\test" -File | Sort-Object LastWriteTime | Select -Last 1).LastWriteTime
if ($LastWriteTime -le (Get-Date).AddMinutes(-5))
{
    Write-Output "No files added in the last 5 minutes"
    # notify me...
} 

并安排Windows Task Scheduler中的脚本每五分钟运行一次.

and schedule the script in Windows Task Scheduler to run every five minutes.

它将找到目录中编辑的最新文件.

It finds the newest file edited in the directory.

不需要FileSystemWatcher

No need for a FileSystemWatcher

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