mkswap --version (return code: 0)
mkswap from util-linux 2.27.1
mkswap --help (return code: 0)
Usage:
mkswap [options] device [size]
Set up a Linux swap area.
Options:
-c, --check check bad blocks before creating the swap area
-f, --force allow swap size area be larger than device
-p, --pagesize SIZE specify page size in bytes
-L, --label LABEL specify label
-v, --swapversion NUM specify swap-space version number
-U, --uuid UUID specify the uuid to use
-V, --version output version information and exit
-h, --help display this help and exit