Hi,
To find a string or a line in a set of files..you can try this command
find / -name "*.*" -print | xargs grep "<search pattern>"
This will search through all the files..if you know the type of the file..say "c" files or perl files "*.pl" you can modify the command accordingly..this will minimize the search time...
Typically, your command should look something like this...
find / -name "*.c" -print | xargs grep "abc"
Hope this helps
Regards,
Bharath (bharathanv@epatra.com)