[-z | --null]
[-c | --count] [--all-match] [-q | --quiet]
[--max-depth <depth>]
- [--color | --no-color]
+ [--color[=<when>] | --no-color]
[-A <post-context>] [-B <pre-context>] [-C <context>]
[-f <file>] [-e] <pattern>
[--and|--or|--not|(|)|-e <pattern>...]
Instead of showing every matched line, show the number of
lines that match.
---color::
+--color[=<when>]::
Show colored matches.
+ The value must be always (the default), never, or auto.
--no-color::
Turn off match highlighting, even when the configuration file
gives the default to color output.
+ Same as `--color=never`.
-[ABC] <context>::
Show `context` trailing (`A` -- after), or leading (`B`