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    <p>One way to avoid file locks caused by running the script on a timer is to use an event driven approach using a file system watcher. It has the ability to execute code when an event such as a new file is created in the folder you are monitoring.</p> <p>To run code when the file is finished copying you would need to listen for the <code>changed</code> event. There is a slight issue with this event in that it fires once when the file begins copying and again when it is finished. I got an idea to work around this chicken/egg problem after checking out the module Mike linked to in the comments. I've updated the code below so that it will only fire off code when file has fully been written.</p> <p>To try, change <code>$folderToMonitor</code> to the folder you want to monitor and add some code to process the file.</p> <pre><code>$processFile = { try { $filePath = $event.sourceEventArgs.FullPath [IO.File]::OpenRead($filePath).Close() #A Way to prevent false positive for really small files. if (-not ($newFiles -contains $filePath)) { $newFiles += $filePath #Process $filePath here... } } catch { #File is still being created, we wait till next event. } } $folderToMonitor = 'C:\Folder_To_Monitor' $watcher = New-Object System.IO.FileSystemWatcher -Property @{ Path = $folderToMonitor Filter = $null IncludeSubdirectories = $true EnableRaisingEvents = $true NotifyFilter = [System.IO.NotifyFilters]'FileName,LastWrite' } $script:newFiles = @() Register-ObjectEvent $watcher -EventName Changed -Action $processFile &gt; $null </code></pre>
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    1. POPowershell - "The process cannot access the file because it is being used by another process"
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    1. USAndy Arismendi
    1. USAndy Arismendi
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    1. CODoes the "Created" Event fire when the file is initially created or when it is done being created. For example, when I copy a file into a new location the file starts out as 0kb, and then grows to it's full size. Will the event be fired when it's at 0kb, or when it's done, or does the file system hide all this stuff from us?
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    2. CO@Jim I added some info to my answer.
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      1. USAndy Arismendi
    3. COBtw, there is PS module that implements this https://github.com/jfromaniello/pswatch/
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      1. USMike Chaliy
 

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