Can someone show me on to write a script to rename all the file within the same directory to uppercase file name? e.g : abc.tex --> ABC.tex test_one --> TEST_ONE.tex Thank.

You could do it in perl with the "uc" command which converts strings to upper case. Something like: foreach $file(`ls`){ $newfile = uc ($file); print `mv $file $newfile`; } If you wanted to change just the name without converting the extension, split the string at the "." first.

I am not familiar with perl. Could i save it as re-name.sh then execute it with Linux Shell Command prompt as Shell script? Also, can you show me on how to split the file name with it? Thanks

You certainly can. Just make sure the shebang points to the right place and that you have perl installed on your system (which you probably do). To find the location: $ which perl On my system it returns "/usr/bin/perl" so the first line must be "#!/usr/bin/perl" (as you would do for #!/bin/bash). FYI a lot of perl scripts end with .pl instead of .sh, although it doesn't really matter. Well, this script works for me: #!/usr/bin/perl foreach $file(`ls`){ $file =~ /(.*)\.(.*)/; ($name,$extension) = ($1,$2); $newname = uc ($name); chomp ($file); print `mv $file $newname.$extension`; }

You can use this after command to convert to uppercase: |tr 'a-z' 'A-Z' Example: echo "Iuri" | tr 'a-z' 'A-Z' # IURI ls -l | tr 'a-z' 'A-Z'