Modify File Write Time In Powershell

Tags: powershell

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The goal here is to fix file dates that were messed up after copying a huge amount of files from one server to another. We will look up the source file in $lookupPath then set the same modified date/time on the new file in $replacedPath.

$lookupPath = 'H:\Shares\Data\Documentation\Data'
$replacedPath = 'C:\\Users\\USERNAME\\Data\\Documentation\\Data'

ForEach ($file in $(Get-ChildItem -Recurse)) {
    $shortLocal = $file.FullName -Replace "$replacedPath",""
    Write-Host "shortLocal is $shortLocal" -ForegroundColor Green
    Write-Host "Time on shortLocal is" $(Get-Item $shortLocal).LastWriteTime -ForegroundColor Green

    $longRemote = $lookupPath + $shortLocal
    Write-Host "longRemote is $longRemote" -ForegroundColor Cyan
    Write-Host "Time on longRemote is" $(Get-Item $longRemote).LastWriteTime -ForegroundColor Cyan

    Write-Warning "Setting write time from $longRemote onto $shortLocal"
    $(Get-Item $shortLocal).LastWriteTime=$(Get-Item $longRemote).LastWriteTime

    Write-Host "Time on shortLocal is now" $(Get-Item $shortLocal).LastWriteTime
}

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Sources:

• https://superuser.com/questions/924365/changing-last-modified-date-or-time-via-powershell