REV(1)

NAME
rev - reverse lines of a file

SYNOPSIS
rev [file ...]

DESCRIPTION
The rev utility copies the specified files to the standard output, reversing the order of characters in every line. If no files are specified, the standard input is read.

EXAMPLES
Reverse the text from stdin:

    $ echo -e "reverse \t these\ntwo lines" | rev
    eseht    esrever
    senil owt