gftype --version (return code: 0)
GFtype 3.1 (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 GFtype copyright and the Lesser GNU General Public License. For more information about these matters, see the file named COPYING and the GFtype source. Primary author of GFtype: D.R. Fuchs.
gftype --help (return code: 0)
Usage: gftype [OPTION]... GFNAME Verify and translate the bitmap font GFNAME to human-readable form, written to standard output. -images show characters as pixels -mnemonics translate all GF commands -help display this help and exit -version output version information and exit Email bug reports to email@example.com.