sbase/grep.1

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.TH GREP 1 sbase\-VERSION
.SH NAME
grep \- search files for a pattern
.SH SYNOPSIS
.B grep
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.RB [ \-EHcilnqv ]
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.RB [ \-e
.I pattern ]
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.I pattern
.RI [ file ...]
.SH DESCRIPTION
.B grep
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searches the input files for lines that match the
.IR pattern ,
a regular expression as defined in
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.IR regex (7).
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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
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.B \-E
matches using extended regex.
.TP
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.B \-H
prefixes each matching line with its filename in the output. This is the
default when there is more than one file specified.
.TP
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.B \-c
prints only a count of matching lines.
.TP
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.B \-e pattern
Specify a pattern used during the search of the input: an input
line is selected if it matches any of the specified patterns.
This option is most useful when multiple -e options are used to
specify multiple patterns, or when a pattern begins with a dash
(`-').
.TP
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.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.
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.SH SEE ALSO
.IR regex (7)