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

       -h, --help
           Display help text and exit.

       -V, --version
           Print version and exit.

       -0, --zero
           Zero termination. Use the byte '\0' as line separator.

SEE ALSO

       tac(1)

REPORTING BUGS

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