sbase/uniq.1

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.Dd 2015-10-08
.Dt UNIQ 1
.Os sbase
.Sh NAME
.Nm uniq
.Nd report or filter out repeated lines in a file
.Sh SYNOPSIS
.Nm
.Op Fl c
.Op Fl d | u
.Op Fl f Ar num
.Op Fl s Ar num
.Op Ar input Op Ar output
.Sh DESCRIPTION
.Nm
reads the
.Ar input
file and writes one copy of a line from each group of consecutive
duplicate lines to the
.Ar output
file. If no
.Ar input
file is given
2015-02-01 19:52:28 +00:00
.Nm
reads from stdin. If no
.Ar output
file is given
.Nm
writes to stdout.
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl c
Prefix each line with the number of consecutive occurrences in
.Ar input .
.It Fl d | Fl u
Print duplicate | unique lines only.
.It Fl f Ar num | Fl s Ar num
Ignore the first
.Ar num
fields | characters in each input line when doing comparisons.
.El
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2013
specification.