rev(1) — Linux manual page

 REV(1) User Commands REV(1) 

NAME         top

 rev - reverse lines characterwise 

SYNOPSIS         top

 rev [option] [file...] 

DESCRIPTION         top

 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         top

 -0, --zero Zero termination. Use the byte '\0' as line separator. -h, --help Display help text and exit. -V, --version Display version and exit. 

SEE ALSO         top

 tac(1) 

REPORTING BUGS         top

 For bug reports, use the issue tracker <https://github.com/util-linux/util-linux/issues>. 

AVAILABILITY         top

 The rev command is part of the util-linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-linux/>. This page is part of the util-linux (a random collection of Linux utilities) project. Information about the project can be found at ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a bug report for this manual page, send it to util-linux@vger.kernel.org. This page was obtained from the project's upstream Git repository ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on 2025-08-11. (At that time, the date of the most recent commit that was found in the repository was 2025-08-05.) If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which is not part of the original manual page), send a mail to man-pages@man7.org util-linux 2.42-start-521-ec46 2025-08-09 REV(1) 

Pages that refer to this page: tac(1)

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