.TH GREP 1 sbase\-VERSION
.SH NAME
grep \- search files for a pattern
.SH SYNOPSIS
.B grep
.RB [ \-Ecilnqv ]
.I pattern
.RI [ file ...]
.SH DESCRIPTION
.B grep
searches the input files for lines that match the
.IR pattern ,
a regular expression as defined in
.IR regex (7).
By default each matching line is printed to stdout.  If no file is given, grep
reads from stdin.
.P
The status code is 0 if any lines match, and 1 if not.  If an error occurred the
status code is 2.
.SH OPTIONS
.TP
.B \-E
matches using extended regex.
.TP
.B \-c
prints only a count of matching lines.
.TP
.B \-i
matches lines case insensitively.
.TP
.B \-l
prints only the names of files with matching lines.
.TP
.B \-n
prefixes each matching line with its line number in the input.
.TP
.B \-q
prints nothing, only returns status.
.TP
.B \-v
selects lines which do
.B not
match the pattern.
.SH SEE ALSO
.IR regex (7)