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Negative matching using grep (match lines that do not contain foo)

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+3 A:

grep -v is your friend

grep --help | grep invert
-v, --invert-match select non-matching lines

Also check out the related -L (the complement of -l).

-L, --files-without-match only print FILE names containing no match

Motti 2010-08-23 14:25:40

Thanks for the reply! Tried this and grep --invert-match 'error_log' | find /home/foo/public_html/ -mmin -60runs for several minutes and outputs/home/foo/public_html/contest/error_log/home/foo/public_html/error_logetc...whereas grep ! error_log | find /home/foo/public_html/ -mmin -60 produces that same output and finishes in 2 seconds.What am I doing wrong? Also tried it with -v instead of --invert-match

jerrygarciuh 2010-08-23 14:35:23

@jerrygarciuh, You have the `find` and the `grep` in the wrong order, it should be `find /home/foo/public_html -mmin -60 | grep -v error_log`

Motti 2010-08-23 14:40:15

Oy. Thank you! Much obliged.

jerrygarciuh 2010-08-23 15:05:04

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Negative matching using grep (match lines that do not contain foo)

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