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
 -q, --quiet               suppress output and warning messages
 -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
 -e, --endianness=<value>  specify the endianness to use (native, little or big)
 -o, --offset OFFSET       specify the offset in the device
 -s, --size SIZE           specify the size of a swap file in bytes
 -F, --file                create a swap file
     --verbose             verbose output
     --lock[=<mode>]       use exclusive device lock (yes, no or nonblock)
 -h, --help                display this help
 -V, --version             display version

For more details see mkswap(8).