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i tried man sed, but i work better with visual examples, and the registry i'm guessing well here's an example:

sed '1,$s/\(.*\)\t\(.*\)/\2 \1/' file
_________^______^
________reg 1____reg 2...

can someone please explain the sed command and its purpose and an example of its use. Also can you explain the registry thing with an example also. thanks

I have these questions for my unix class that I can't figure out because I missed a couple of days. They are for a quiz we took last week so by answering the questions you are not bettering my grade...

I have these questions for my unix class that I can't figure out because I missed a couple of days. They are for a quiz we took last week so by answering the questions you are not bettering my grade...