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I tried using the following code to rename a folder of files "C:\www\folderx" using a text list "..\list.txt", but I can't figure out how to get the current file index:

Get-Childitem C:\www\folderx | % {
    $OldName = $_.name;
    $NewName = (GC ..\list.txt)[<CURRENT INDEX SHOULD GO HERE>];
    # Rename-Item -Newname $NewName;
    Write-Output $("Renamed {0} to {1}" -f $OldName,$NewName);
}
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  • Never mind, I found a shorter solution: stackoverflow.com/a/1523078/1067499 Commented Jun 23, 2013 at 0:08
  • possible duplicate of How to loop through files and rename using PowerShell? Commented Jun 23, 2013 at 10:17
  • 3
    For efficiency, don't put the (GC ..\list.txt) inside the foreach. You're re-reading the contents of list.txt for every file passed down the pipeline. You could put that in the begin block e.g. ... | Foreach -Begin {$i=0;$c = gc ..\list.txt} {$newname = $c[$i++];...} Commented Jun 23, 2013 at 18:35
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