patgen --version (return code: 0)
PATGEN 2.4 (TeX Live 2015/Debian) kpathsea version 6.2.1 There is NO warranty. Redistribution of this software is covered by the terms of both the PATGEN copyright and the Lesser GNU General Public License. For more information about these matters, see the file named COPYING and the PATGEN source. Primary author of PATGEN: Frank M. Liang and Peter Breitenlohner.
patgen --help (return code: 0)
Usage: patgen [OPTION]... DICTIONARY PATTERNS OUTPUT TRANSLATE Generate the OUTPUT hyphenation file for use with TeX from the DICTIONARY, PATTERNS, and TRANSLATE files. -help display this help and exit -version output version information and exit Email bug reports to email@example.com.