Manual Reference Pages - ROT13 (1)
rot13 - shroud text with simple rot-13 cypher
rot13 [input [output]]
This manual page
rot13 text filter.
If no filenames are specified,
rot13 reads from stdin and writes to
stdout. If one filename is specified,
rot13 reads from that file and writes to stdout. If two filenames are specified,
rot13 reads from the first file and writes to the second file. You may use
rot13 inside the vi editor just as you would other filters, e.g. fmt.
Rot13 performs Usenet-standard rot-13
encryption. This is done by taking the input letter and shifting it
left by 13 characters, so an A becomes an N, a B becomes an O, and so
rot13 a second time restores the original text. The encrypted version of the
sentence The quick brown fox jumps over the lazy dog. looks like this:
Gur dhvpx oebja sbk whzcf bire gur ynml qbt.
Note that rot-13 is obviously not secure encryption. The main purpose of
rot13 is to shield sensitive eyes from potentially offensive or disturbing
public messages. Most news readers provide a command to decode
rot13 messages. For example, the tin news reader uses the command d.
The original author is Marc Unangst. Various ways of contacting him are:
Marc Unangst of 1:firstname.lastname@example.org
The 1994 update was done by Thomas McWilliams. See Changelog in the
source distribution for details.
Distribution permitted under the terms of the GNU General Public
License, version 2 (or later versions at your preference). Copies
of this agreement are available from:
Free Software Foundation, Inc.,
675 Mass Ave,
Cambridge, MA 02139, USA.
|Linux ||ROT13 (1) ||01 Sept 1994 |
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