Provided by: util-linux_2.20.1-5.1ubuntu20.9_amd64
NAME
rev — reverse lines of a file or files
SYNOPSIS
rev [-V] [-h] [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. -V, --version Output version information and exit. -h, --help Output help and exit.
AVAILABILITY
The rev command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.