mt-gnu --version (return code: 0)
mt (GNU cpio) 2.11 Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by David MacKenzie and Sergey Poznyakoff.
mt-gnu --help (return code: 0)
Usage: mt-gnu [OPTION...] operation [count] control magnetic tape drive operation -f, --file=DEVICE use device as the file name of the tape drive to operate on --rsh-command=COMMAND use remote COMMAND instead of rsh -?, --help give this help list --usage give a short usage message -V, --version print program version Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. Report bugs to <email@example.com>.