rev - reverse lines characterwise
rev [option] [file...]
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
- -V, --version
- Display version information and exit.
- -h, --help
- Display help text and exit.
The rev command is part of the util-linux package and is available from