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[thirdparty/util-linux.git] / text-utils / rev.1

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.\"	@(#)rev.1	6.3 (Berkeley) 3/21/92
.\"
.TH REV "1" "September 2011" "util-linux" "User Commands"
.SH NAME
rev \- reverse lines characterwise
.SH SYNOPSIS
.B rev
[option]
.RI [ file ...]
.SH DESCRIPTION
The
.B rev
utility copies the specified files to standard output, reversing the order of
characters in every line.  If no files are specified, standard input is read.
.PP
This utility is a line-oriented tool and it uses in-memory allocated buffer
for a whole wide-char line.  If the input file is huge and without line breaks
than allocate the memory for the file may be unsuccessful.
.SH OPTIONS
.TP
\fB\-V\fR, \fB\-\-version\fR
Display version information and exit.
.TP
\fB\-h\fR, \fB\-\-help\fR
Display help text and exit.
.SH SEE ALSO
.BR tac (1)
.SH AVAILABILITY
The rev command is part of the util-linux package and is available from
.UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
Linux Kernel Archive
.UE .