rev (1) - Linux Manuals

rev: reverse lines characterwise

Command to display rev manual in Linux: $ man 1 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 than allocate the memory for the file may be unsuccessful.

OPTIONS

-V, --version

: Display version information and exit.

-h, --help

: Display help text and exit.

REPORTING BUGS

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

AVAILABILITY

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/>.