Changing last modified date or time via PowerShell

Try this in Powershell:

Get-ChildItem *.jpg | Rename-Item -newname {$_.LastWriteTime.toString("dd.MM.yyyy.HH.mm") + ".jpg"}

Move directory tree and retain all timestamp attribute values

So your goal is to ensure that files and folders that are moved from a source location over to a destination location have their LastWriteTime, LastAccessTime, and CreationTime attribute values retained from the source location where those originated.

Essentially this. . .

• Uses Copy-Item rather than Move-Item
• Loops through source and sets timestamp attribute variables values to then use Set-ItemProperty to set those same values to those properties in the destination for all folders and files recursively
• Explicitly does the same Set-ItemProperty timestamp attribute value set loop for folder objects only
• Uses Remove-Item to then delete the original source file objects only cleaning those up
• Uses Remove-Item to then delete the original source folder object only cleaning those up

Script

$src = "C:\Src\Folder\123\"
$dest = "X:\Dest\Folder\321\"
$src = $src.Replace("\","\\")

$i = Get-ChildItem -Path $src -Recurse
$i | % {     ## -- All files and folders

    $apath = $_.FullName -Replace $src,""
    $cpath = $dest + $apath

    Copy-Item -Path $_.FullName -Destination $cpath -Force

    If (Test-Path $cpath)
       {
           Set-ItemProperty -Path $cpath -Name CreationTime -Value $_.CreationTime
           Set-ItemProperty -Path $cpath -Name LastWriteTime -Value $_.LastWriteTime
           Set-ItemProperty -Path $cpath -Name LastAccessTime -Value $_.LastAccessTime
       }
    }

$d = Get-ChildItem -Path $src -Recurse -Directory
$d | % {     ## -- Folders only

    $apath = $_.FullName -Replace $src,""
    $cpath = $dest + $apath

    If (Test-Path $cpath)
       {
           Set-ItemProperty -Path $cpath -Name CreationTime -Value $_.CreationTime
           Set-ItemProperty -Path $cpath -Name LastWriteTime -Value $_.LastWriteTime
           Set-ItemProperty -Path $cpath -Name LastAccessTime -Value $_.LastAccessTime
       }
    }


$f = Get-ChildItem -Path $src -Recurse -File
$f | % {     ## -- Delete files only

    $apath = $_.FullName -Replace $src,"" 
    $cpath = $dest + $apath

    If (Test-Path $cpath)
       {
            Remove-Item $_.FullName -Force -ErrorAction SilentlyContinue
       }
    }


$d | % {     ## -- Delete directories only

    $apath = $_ -Replace $src,"" 
    $cpath = $dest + $apath

    If (Test-Path $cpath)
       {
            Remove-Item $_.FullName -Recurse -Force -ErrorAction SilentlyContinue
       }
    }

Further Resources

• Replace
• Get-ChildItem
• ForEach-Object

  Standard Aliases for Foreach-Object: the '%' symbol, ForEach

• Copy-Item
• If
• Test-Path
• Set-ItemProperty
• Remove-Item