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at February 3, 2010 04:27 by edeustace
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tail -f /myFile.log | grep 'string_to_find' # for a log file # 1: hello # 2: string_to_find on line 2 # 3: hello again # the command above will output: # string_to_find on line 2 # to do an invert match just use -v with grep # tail -f /myFile.log | grep -v 'string_to_ignore'
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When tailing a log file, its sometimes handy to only show parts of it that you are interested in, this simple pipe does the job.
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Filter the output of a tail
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filter
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Bash