53 lines
1021 B
Groff
53 lines
1021 B
Groff
.Dd January 30, 2015
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.Dt UNIQ 1
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.Os sbase
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.Sh NAME
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.Nm uniq
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.Nd report or filter out repeated lines in a file
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.Sh SYNOPSIS
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.Nm
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.Op Fl c
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.Op Fl d | u
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.Op Fl f Ar fields
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.Op Fl s Ar chars
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.Op Ar input Op Ar output
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.Sh DESCRIPTION
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.Nm
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reads the
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.Ar input
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file and writes one copy of a line from each group of consecutive
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duplicate lines to the
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.Ar output
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file. If no
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.Ar input
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file is given,
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.Nm
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reads from stdin. If no
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.Ar output
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file is given, then
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.Nm
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writes to stdout.
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl c
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Prefixes each line with a count of its consecutive occurrences in the input.
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.It Fl d
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Suppresses non-duplicate lines (thus 'uniq -d' prints only duplicates).
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.It Fl u
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Suppresses non-unique lines (thus 'uniq -u' prints only uniques).
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.It Fl f Ar fields
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Ignore the first
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.Ar fields
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in each input line when doing comparisons.
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.It Fl s Ar chars
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Ignore the first
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.Ar chars
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characters in each input line when doing comparisons.
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.El
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.Sh STANDARDS
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The
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.Nm
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utility is compliant with the
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.St -p1003.1-2008
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specification.
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