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Old 12-03-2013, 10:35 PM   #1
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Question How might I grep multiple live outputs?

I'm not the most experienced individual when it comes to Linux or its commands, but let's say I wanted to launch a program and run multiple expressions on its text output, all of which output to a live buffer. How might I do this and separate each expression's output to a separate buffer or separate terminal?

I could probably figure out how to output to separate files, but I want each filter updating in real-time and isolated (not cluttered by the other filters' outputs).
Also, is there any way I can remove a segment of text from the beginning of each line? I haven't looked into that at all yet.

Last edited by smalltock; 12-03-2013 at 10:38 PM.
Old 12-03-2013, 10:57 PM   #2
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You could dump the raw output to a logfile and run several 'tail -f's piped to appropriate greps or seds or awks or such.
Old 12-03-2013, 11:23 PM   #3
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Thank you for the speedy response
That could work, but there's something else that I'd prefer to do if at all possible.
Am I able to pipe ALL output from one terminal into two others? And if so, could I have two different grep expressions running in each destination terminal? I'm using the terminator terminal, by the way, but if there is a universal solution, that'd be fantastic.
Old 12-05-2013, 12:04 AM   #4
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Yes, you can use tail -f from multiple terminals and use separate grep expressions on each one if you wanted to. Linux is too versatile to only have one solution.

Last edited by wstewart90; 12-05-2013 at 12:12 AM.
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Old 12-07-2013, 07:43 AM   #5
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Yes! That's fantastic! Thank you very much


buffer, grep, live, output, program

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