uptime --version (return code: 0)
uptime from procps-ng 3.3.10
uptime --help (return code: 0)
Usage:
uptime [options]
Options:
-p, --pretty show uptime in pretty format
-h, --help display this help and exit
-s, --since system up since
-V, --version output version information and exit
For more details see uptime(1).