Shell Programming and Scripting

Hello all

I am trying to do a script that would allow me to mass rename files after a grep search within them. They are XML files and the pattern I would like to append to the file name is easy to find (e.g. <filename>foo</filename>), but I can't for the life of me find out how to do it and couldn't find a similar request, although I guess this could be useful in a number of situations.

So, I understand I will have to have a loop like

for file in file_name* ; do mv $file $file$variable.xml ; done

The issues are:
1. how to grep the relevant part of each file and parse the relevant bit of that pattern
2. whether my assumption above would work
3. if so, how to redirect what I get in 1. that into the variable above

I am very new to shell scripting, but enjoying a lot it's power so far.

Thanks in advance

Code:

perl -ne '/<filename>(.+)<\/filename>/ && system "mv $ARGV $1"' file_name*

That did the job really well, much appreciated bartus11.