egrep (1) Linux Manual Page
NAME grep, egrep, fgrep, rgrep – print lines that match patterns SYNOPSIS grep [OPTION…] PATTERNS [FILE…] grep [OPTION…] -e PATTERNS … [FILE…] grep [OPTION…] -f PATTERN_FILE … [FILE…] DESCRIPTION grep searches for PATTERNS in each FILE. PATTERNS is one or more patterns separated by newline characters, and grep prints each line that matches a pattern….
