Hi, my first post here so apologies as required in advance... I've run into a similar problem, using: my @files=<c:/Storage/*.csv>; #Reads all csv files foreach(@files){ $newname=(extract some data from the file here) $success=rename $oldname,$newname; } The error message I get is 'permission denied'. If I have "old.txt" file in the same dir and execute a simple $success=rename "old.txt","new.txt"; then it works ok. If I change: @files=<c:/Storage/*.csv>; to @files=<c:/Storage/*.txt>; then it doesn't. Confused, please help.