egrep (tool) An extended version of the Unix grep command. Egrep accepts extended regular expressions (REs) including "*" following multi-character REs; "+" (one or more matches); "?" (zero or one matches); "|" separating two REs matches either. REs may be bracketed with (). Despite its additional complexity, egrep is usually faster than fgrep or grep.
Last updated: 2004-07-20
