Merge branch 'PR/libmount-exec-errors' of github.com:karelzak/util-linux-work

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

//po4a: entry man manual
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	@(#)rev.1	6.3 (Berkeley) 3/21/92
////
= rev(1)
:doctype: manpage
:man manual: User Commands
:man source: util-linux {release-version}
:page-layout: base
:command: rev

== NAME

rev - reverse lines characterwise

== SYNOPSIS

*rev* [option] [_file_...]

== DESCRIPTION

The *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.

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 then allocating the memory for the file may be unsuccessful.

== OPTIONS

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*-0*, *--zero*::
_Zero termination_. Use the byte '\0' as line separator.

== SEE ALSO

*tac*(1)

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