efax-gtk --version (return code: 0)
efax-gtk-3.2.8
Copyright (C) 2001 - 2011 Chris Vine
This program is released under the GNU General Public License, version 2
efax-gtk --help (return code: 0)
efax-gtk-3.2.8
Usage: efax-gtk [options] [filename]
Options:
-r Start the program in receive standby mode
-s Start the program hidden in the system tray
See the README file which comes with the distribution
for further details