Hi All, I don't know if I should use sed for what I'm about to ask, but it seems like a good idea. If awk is better, or something else entirely, that's fine too. I have two files. File "1" looks like this: AA BB CC DD AA BB CC DD File "2" looks like this: BBBB1 BBBB2 BBBB3 So, "BB" in file "1" always occurs in the same spot (i.e. between lines AA and CC). Knowing that, how do I replace the first occurrence of "BB" in file "1" with "BBBB1" from file 2, the second occurrence of "BB" in file "1" with "BBBB2" from file 2, and so on? I think a bash 'for' or 'while' loop may be useful here, too. But, it's the sed/awk/whatever bits I don't know how to do. I've read some of the man/info page, looked up sed help on the net, etc. I'm still not sure how to do the above with sed. Thanks in advance! Regards, Ranbir -- Kanwar Ranbir Sandhu Linux 2.6.27.30-170.2.82.fc10.x86_64 x86_64 GNU/Linux 13:29:18 up 9 days, 3:04, 3 users, load average: 1.13, 0.37, 0.18 -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines