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Thank you guys a lot.
While I do use unix for some very basic stuff, I did not know any perl or shell programming a couple of days ago. But I heard that perl or shell is good to solve my problem....

if you can provide some sort of summary from the videos that will be helpful.

I really love this forum. I have no unix expert to talk to and was stuck on my issue for days, and here I got it resolved within a hour. Thank you.

can you explain what is "-0pe" and what "\1" mean in the command. thanks!

---------- Post updated 07-18-11 at 09:58 AM ---------- Previous update was 07-17-11 at 11:37 PM ----------

I need to...

Thanks a lot! They both works.

I couldn't figure out how to use sed or any other shell to do the following. Can anyone help? Thanks.

If seeing a string (e.g., TODAY) in the line,
replace a string in the line above (e.g,...