in reply to Optimize file renaming.

E:\test>dir Volume in drive E has no label. Volume Serial Number is 4266-6D09 Directory of E:\test 26/05/2005 13:20 <DIR> . 26/05/2005 13:20 <DIR> .. 26/05/2005 13:05 0 1.png 26/05/2005 13:05 0 2.png 26/05/2005 13:05 0 3.png 26/05/2005 13:05 0 4.png 26/05/2005 13:05 0 5.png 5 File(s) 0 bytes 2 Dir(s) 60,811,968,512 bytes free E:\test>for %f in (*.png) do @perl -e "$new = substr('0'x3 . $ARGV[0], +-7); `ren $ARGV[0] $new`;" %f E:\test>dir Volume in drive E has no label. Volume Serial Number is 4266-6D09 Directory of E:\test 26/05/2005 13:20 <DIR> . 26/05/2005 13:20 <DIR> .. 26/05/2005 13:05 0 001.png 26/05/2005 13:05 0 002.png 26/05/2005 13:05 0 003.png 26/05/2005 13:05 0 004.png 26/05/2005 13:05 0 005.png 5 File(s) 0 bytes 2 Dir(s) 60,811,968,512 bytes free E:\test>