diff options
Diffstat (limited to 'usr.bin/uniq/uniq.1')
-rw-r--r-- | usr.bin/uniq/uniq.1 | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/usr.bin/uniq/uniq.1 b/usr.bin/uniq/uniq.1 new file mode 100644 index 0000000..0898e0e --- /dev/null +++ b/usr.bin/uniq/uniq.1 @@ -0,0 +1,130 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)uniq.1 8.1 (Berkeley) 6/6/93 +.\" +.Dd June 6, 1993 +.Dt UNIQ 1 +.Os +.Sh NAME +.Nm uniq +.Nd report or filter out repeated lines in a file +.Sh SYNOPSIS +.Nm uniq +.Op Fl c | Fl d | Fl u +.Op Fl f Ar fields +.Op Fl s Ar chars +.Oo +.Ar input_file +.Op Ar output_file +.Oc +.Sh DESCRIPTION +The +.Nm uniq +utility reads the standard input comparing adjacent lines, and writes +a copy of each unique input line to the standard output. +The second and succeeding copies of identical adjacent input lines are +not written. +Repeated lines in the input will not be detected if they are not adjacent, +so it may be necessary to sort the files first. +.Pp +The following options are available: +.Bl -tag -width Ds +.It Fl c +Precede each output line with the count of the number of times the line +occurred in the input, followed by a single space. +.It Fl d +Don't output lines that are not repeated in the input. +.It Fl f Ar fields +Ignore the first +.Ar fields +in each input line when doing comparisons. +A field is a string of non-blank characters separated from adjacent fields +by blanks. +Field numbers are one based, i.e. the first field is field one. +.It Fl s Ar chars +Ignore the first +.Ar chars +characters in each input line when doing comparisons. +If specified in conjunction with the +.Fl f +option, the first +.Ar chars +characters after the first +.Ar fields +fields will be ignored. +Character numbers are one based, i.e. the first character is character one. +.It Fl u +Don't output lines that are repeated in the input. +.\".It Fl Ns Ar n +.\"(Deprecated; replaced by +.\".Fl f ) . +.\"Ignore the first n +.\"fields on each input line when doing comparisons, +.\"where n is a number. +.\"A field is a string of non-blank +.\"characters separated from adjacent fields +.\"by blanks. +.\".It Cm \&\(pl Ns Ar n +.\"(Deprecated; replaced by +.\".Fl s ) . +.\"Ignore the first +.\".Ar m +.\"characters when doing comparisons, where +.\".Ar m +.\"is a +.\"number. +.El +.Pp +If additional arguments are specified on the command line, the first +such argument is used as the name of an input file, the second is used +as the name of an output file. +.Pp +The +.Nm uniq +utility exits 0 on success, and >0 if an error occurs. +.Sh COMPATIBILITY +The historic +.Cm \&\(pl Ns Ar number +and +.Fl Ns Ar number +options have been deprecated but are still supported in this implementation. +.Sh SEE ALSO +.Xr sort 1 +.Sh STANDARDS +The +.Nm uniq +utility is expected to be +.St -p1003.2 +compatible. |