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e9a910b33c
i currently use the output of sha512sum in several places of xbmk, which is a bit unreliable in case output changes. other cases where i use util outputs in variables are probably reliable, because i'm using mostly posix utilities in those. to mitigate this, i now import suckless sbase, which has a reasonable sha512sum implementation. *every* binary it builds is being placed in build.list, because i'll probably start using more of them. for example, i may start modifying the "date" implementation, adding the GNU-specific options that i need as mentioned on init.sh i'm importing it in util/ because the sha512sum util is needed for verifying project sources, so if sbase itself is a "project source", that means we can into a chicken and egg bootstrapping problem. this is sbase at revision: 055cc1ae1b3a13c3d8f25af0a4a3316590efcd48 Signed-off-by: Leah Rowe <leah@libreboot.org>
95 lines
2.3 KiB
Groff
95 lines
2.3 KiB
Groff
.Dd October 8, 2015
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.Dt GREP 1
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.Os sbase
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.Sh NAME
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.Nm grep
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.Nd search files for patterns
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.Sh SYNOPSIS
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.Nm
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.Op Fl EFHchilnqsvx
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.Op Fl e Ar pattern
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.Op Fl f Ar file
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.Op Ar pattern
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.Op Ar file ...
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.Sh DESCRIPTION
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.Nm
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searches the input files for lines that match the
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.Ar pattern ,
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a regular expression as defined in
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.Xr regex 7 or
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.Xr re_format 7 .
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By default each matching line is printed to stdout.
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If no
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.Ar file
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is given
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.Nm
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reads from stdin.
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl E
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Match using extended regex.
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.It Fl F
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Match using fixed strings.
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Treat each pattern specified as a string instead of a regular
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expression.
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.It Fl H
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Prefix each matching line with its filename in the output.
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This is the default when there is more than one file specified.
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.It Fl c
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Print only a count of matching lines.
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.It Fl e Ar 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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.It Fl f Ar file
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Read one or more patterns from the file named by the pathname file.
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Patterns in file shall be terminated by a <newline>.
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A null pattern can be specified by an empty line in pattern_file.
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Unless the -E or -F option is also specified, each pattern shall be
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treated as a BRE.
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(`-').
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.It Fl h
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Do not prefix each line with 'filename:' prefix.
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.It Fl i
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Match lines case insensitively.
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.It Fl l
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Print only the names of files with matching lines.
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.It Fl n
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Prefix each matching line with its line number in the input.
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.It Fl q
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Print nothing, only return status.
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.It Fl s
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Suppress the error messages ordinarily written for nonexistent or unreadable
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files.
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.It Fl v
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Select lines which do
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.Sy not
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match the pattern.
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.It Fl w
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The expression is searched for as a word (as if surrounded by '\\<' and '\\>').
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.It Fl x
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Consider only input lines that use all characters in the line excluding the
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terminating <newline> to match an entire fixed string or regular expression to
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be matching lines.
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.El
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.Sh EXIT STATUS
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.Bl -tag -width Ds
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.It 0
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One or more lines were matched.
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.It 1
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No lines were matched.
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.It > 1
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An error occurred.
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.El
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.Sh SEE ALSO
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.Xr sed 1 ,
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.Xr re_format 7 ,
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.Xr regex 7
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.Sh STANDARDS
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POSIX.1-2013.
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.Pp
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The
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.Op Fl Hhw
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flags are an extension to that specification.
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