My choice would be to replace the spaces with underline characters. However, you indicated that you wanted space characters to be replaced with ' _ ' strings--to each his own, I guess. This little script should do what you want (I hope). Use at your own risk. #!/bin/bash #win2lin.sh #converts Windblows file names to Linux file names #Spaces in file names are translated to ' _ ' #upper case letters in file names are converted to lower case #This script only performs conversions in the current directory--no #directory tree traversal is provided. #Use this script at your own risk. function win2lin_func { for i in * do newname=`echo $i | tr [A-Z] [a-z] | sed "s/ / _ /g"` if [ "$newname" != "$i" ]; then echo Renaming \"$i\" to \"$newname\" mv -i "$i" "$newname" fi done } #mainline code #check for a single command line parameter if [ "$#" != "1" ]; then echo Usage $0: echo $0 param/ echo where param is the directory where files are to be renamed echo "(be sure to include the trailing /)." exit 1 fi #process the file names win2lin_func #end of win2lin script HTH, and have a _great_ day! On Sat, May 26, 2007 at 10:30:34AM -0600, TheCreator wrote: > Hello list, > I've got a ton of files that have half capital letters, etc etc. > I was wondering if there was a program that would go through and make my file names lowercase, (only on a selected folder), and put an _ between the spaces. > Thanks, > ~~TheCreator~~ -- Ralph. N6BNO. Wisdom comes from central processing, not from I/O. rreid at sunset.net http://personalweb.sunset.net/~rreid ...passing through The City of Internet at the speed of light... _PI = 4 * ARCTAN (1)