xref: /freebsd/usr.bin/rev/rev.1 (revision bdcbfde31e8e9b343f113a1956384bdf30d1ed62)
19b50d902SRodney W. Grimes.\" Copyright (c) 1985, 1992, 1993
29b50d902SRodney W. Grimes.\"	The Regents of the University of California.  All rights reserved.
39b50d902SRodney W. Grimes.\"
49b50d902SRodney W. Grimes.\" Redistribution and use in source and binary forms, with or without
59b50d902SRodney W. Grimes.\" modification, are permitted provided that the following conditions
69b50d902SRodney W. Grimes.\" are met:
79b50d902SRodney W. Grimes.\" 1. Redistributions of source code must retain the above copyright
89b50d902SRodney W. Grimes.\"    notice, this list of conditions and the following disclaimer.
99b50d902SRodney W. Grimes.\" 2. Redistributions in binary form must reproduce the above copyright
109b50d902SRodney W. Grimes.\"    notice, this list of conditions and the following disclaimer in the
119b50d902SRodney W. Grimes.\"    documentation and/or other materials provided with the distribution.
12fbbd9655SWarner Losh.\" 3. Neither the name of the University nor the names of its contributors
139b50d902SRodney W. Grimes.\"    may be used to endorse or promote products derived from this software
149b50d902SRodney W. Grimes.\"    without specific prior written permission.
159b50d902SRodney W. Grimes.\"
169b50d902SRodney W. Grimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
179b50d902SRodney W. Grimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
189b50d902SRodney W. Grimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
199b50d902SRodney W. Grimes.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
209b50d902SRodney W. Grimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
219b50d902SRodney W. Grimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
229b50d902SRodney W. Grimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
239b50d902SRodney W. Grimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
249b50d902SRodney W. Grimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
259b50d902SRodney W. Grimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
269b50d902SRodney W. Grimes.\" SUCH DAMAGE.
279b50d902SRodney W. Grimes.\"
28*fe5bc3e6SFernando Apesteguía.Dd June 27, 2020
299b50d902SRodney W. Grimes.Dt REV 1
309b50d902SRodney W. Grimes.Os
319b50d902SRodney W. Grimes.Sh NAME
329b50d902SRodney W. Grimes.Nm rev
339b50d902SRodney W. Grimes.Nd reverse lines of a file
349b50d902SRodney W. Grimes.Sh SYNOPSIS
358fe908efSRuslan Ermilov.Nm
3647dec781SRuslan Ermilov.Op Ar
379b50d902SRodney W. Grimes.Sh DESCRIPTION
389b50d902SRodney W. GrimesThe
398fe908efSRuslan Ermilov.Nm
409b50d902SRodney W. Grimesutility copies the specified files to the standard output, reversing the
419b50d902SRodney W. Grimesorder of characters in every line.
429b50d902SRodney W. GrimesIf no files are specified, the standard input is read.
43*fe5bc3e6SFernando Apesteguía.Sh EXAMPLES
44*fe5bc3e6SFernando ApesteguíaReverse the text from stdin:
45*fe5bc3e6SFernando Apesteguía.Bd -literal -offset indent
46*fe5bc3e6SFernando Apesteguía$ echo -e "reverse \et these\entwo lines" | rev
47*fe5bc3e6SFernando Apesteguíaeseht    esrever
48*fe5bc3e6SFernando Apesteguíasenil owt
49*fe5bc3e6SFernando Apesteguía.Ed
50