Re: grep question
Johann Spies <jspies@sun.ac.za> writes:
> In the grep's info page I find the following which works as said.
> But I want to know why. What does the [c] do in this case?
[...]
> ps -ef | grep '[c]ron'
It defines a character class containig a "c" as it's only member. The
expression "[cp]ron" would match "cron" as well as "pron", whereas
"[cp]r[o0]n" would also match "pr0n" (and "cr0n").
Get enlightened - type `man 7 regex`.
[x] ulf
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