Negative matching using grep (match lines that do not contain foo)
grep, regex
Solution
`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
Problem
How do I match all lines not matching a particular pattern using `grep`? I tried this: ``` grep '[^foo]' ```