2011-05-23 01:36:34 +00:00
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.TH GREP 1 sbase\-VERSION
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.SH NAME
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grep \- search files for a pattern
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.SH SYNOPSIS
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.B grep
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2014-11-16 10:45:10 +00:00
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.RB [ \-EHcilnqv ]
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2013-09-27 15:26:22 +00:00
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.RB [ \-e
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.I pattern ]
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2011-05-23 01:36:34 +00:00
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.I pattern
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.RI [ file ...]
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.SH DESCRIPTION
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.B grep
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2011-06-18 05:42:24 +00:00
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searches the input files for lines that match the
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.IR pattern ,
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a regular expression as defined in
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2011-05-25 17:29:46 +00:00
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.IR regex (7).
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2011-05-23 01:36:34 +00:00
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By default each matching line is printed to stdout. If no file is given, grep
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reads from stdin.
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.P
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The status code is 0 if any lines match, and 1 if not. If an error occurred the
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status code is 2.
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.SH OPTIONS
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.TP
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2011-06-04 10:57:31 +00:00
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.B \-E
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matches using extended regex.
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.TP
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2014-11-16 10:45:10 +00:00
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.B \-H
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prefixes each matching line with its filename in the output. This is the
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default when there is more than one file specified.
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.TP
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2011-05-23 01:36:34 +00:00
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.B \-c
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prints only a count of matching lines.
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.TP
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2013-09-27 15:26:22 +00:00
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.B \-e pattern
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Specify a pattern used during the search of the input: an input
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line is selected if it matches any of the specified patterns.
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This option is most useful when multiple -e options are used to
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specify multiple patterns, or when a pattern begins with a dash
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(`-').
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.TP
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2011-05-23 01:36:34 +00:00
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.B \-i
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matches lines case insensitively.
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.TP
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.B \-l
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prints only the names of files with matching lines.
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.TP
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.B \-n
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prefixes each matching line with its line number in the input.
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.TP
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.B \-q
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prints nothing, only returns status.
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.TP
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.B \-v
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selects lines which do
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.B not
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match the pattern.
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2011-05-25 17:29:46 +00:00
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.SH SEE ALSO
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.IR regex (7)
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