mcookie --version (return code: 0)
mcookie from util-linux 2.27.1
mcookie --help (return code: 0)
Usage:
mcookie [options]
Generate magic cookies for xauth.
Options:
-f, --file <file> use file as a cookie seed
-m, --max-size <num> limit how much is read from seed files
-v, --verbose explain what is being done
-h, --help display this help and exit
-V, --version output version information and exit
For more details see mcookie(1).