Re: [exim] How to disable logging unroutable addresses?

Quoting Kjetil Torgrim Homme:

>>> most people these days use GNU grep ("the fastest grep in the West", as
>>> the slogan goes):
>> Sure, and fgrep is the same as grep -F. But matching fixed strings is
>> usually faster than matching regexes (depending on CPU and IO speed).
> yes, but the expression used was a fixed string. GNU grep does this

That's why the discussion came up. :)

> analysis for you, it doesn't need any help.

Oh, cool, I didn't know that. Where is this documented? And is this
still true if you run egrep and therefore tell grep to use the pattern
as an extended regex? (hm, probably yes...)