-i, --ignore-case | Ignore case distinctions in pattern |
--[no]smart-case | Ignore case distinctions in pattern, but only if pattern contains no upper caseIgnored if -i is specified. |
-v, --invert-match | Invert match: select non-matching lines |
-w, --word-regexp | Force pattern to match only whole words |
-Q, --literal | Quote all metacharacters: pattern is literal |