man condom

Непонятно.

man 1 condom
  http://cvs.savannah.gnu.org/viewvc/*checkout*/emacs/etc/condom.1?root=emacs

NAME
	condom - Protection against viruses and prevention of child
		 processes

SYNOPSIS
	condom [options] [processid]

DESCRIPTION
	_condom_ provides protection against System Transmitted
Viruses (STVs) that may invade your system.  Although the spread of
such viruses across a network can only be abated by aware and cautious
users, _condom_ is the only highly-effective means of preventing
viruses from entering your system (see celibacy(1)).  Any data passed
to _condom_ by the protected process will be blocked, as specified by
the value of the -s option (see OPTIONS below).  _condom_ is known to
defend against the following viruses and other malicious
afflictions...

	o AIDS
	o Herpes Simplex (genital varieties)
	o Syphilis
	o Crabs
	o Genital warts
	o Gonorrhea
[...]

Перевод: http://www.medportal.ru/mednovosti/news/2008/08/29/khmey/