grep
2021
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Grep Cheatsheet - Notes from Linuxize
Posted on 2 mins
References Manual Link Derived from Linuxize (GNU) Grep supports 3 forms of regex Basic - This is default Extended - -E or --extended-regexp Perl-campatible - -P or --perl-regexp Basic vs Extended meta chars ?,+,{,|,(,) have to prepended with \ in basic but not in extented. There are some more minor subtle diff - here Ex Basic: grep 'b\?right' Extended: grep -E 'b?right' This will match both brignt and right