fgrep (isn't)
Henry Spencer
henry at utzoo.UUCP
Sat Jul 13 02:37:48 AEST 1985
> Notice that plain old grep is the fastest of all, and fgrep is the slowest!
Sigh, it is well-known that fgrep is slow when searching for a single string.
You forgot to test egrep, which is well-known to be the fastest for the
trivial case. Where fgrep makes a difference is when you want to search
for a number of strings simultaneously. Grep can't do that at all, and
egrep hits pattern-complexity limits quickly. Fgrep really screams along
in this case. I haven't tested bgrep et al yet.
--
Henry Spencer @ U of Toronto Zoology
{allegra,ihnp4,linus,decvax}!utzoo!henry
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