fgconsole --version (return code: 0)
fgconsole from kbd 1.15.5
fgconsole --help (return code: 1)
fgconsole version 1.15.5
Usage: fgconsole [options]
Valid options are:
-h --help display this help text
-V --version display program version
-n --next-available display number of next unallocated VT