fgrep


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fgrep

(tool)
A variant of the Unix grep command which searches for fixed (uninterpreted) strings rather than regular expressions. Surprisingly, this is not always faster.
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In this step, it is useful to know the regular expression (RE) and to use Grep, Egrep, Fgrep, Find, Locate.
In fgrep, the average number of specified and performed ALUs in each cycle is not significantly less than that of other benchmarks, yet it has the smallest speedup since most of them are wasted.
(Although we discussed searching single patterns here, our scheme will work for searching multiple patterns with either the Aho-Corasick algorithm used in fgrep [Aho and Corasick 1975] or with agrep's algorithm.)