mkfs.vfat -V (return code: 1)
mkfs.vfat: unrecognized option '--version'
Usage: mkfs.fat [-a][-A][-c][-C][-v][-I][-l bad-block-file][-b backup-boot-sector]
[-m boot-msg-file][-n volume-name][-i volume-id]
[-s sectors-per-cluster][-S logical-sector-size][-f number-of-FATs]
[-h hidden-sectors][-F fat-size][-r root-dir-entries][-R reserved-sectors]
[-M FAT-media-byte][-D drive_number]
[--invariant]
[--help]
/dev/name [blocks]
mkfs.fat 3.0.28 (2015-05-16)
Unknown option: ?
mkfs.vfat --help (return code: 0)
Usage: mkfs.fat [-a][-A][-c][-C][-v][-I][-l bad-block-file][-b backup-boot-sector]
[-m boot-msg-file][-n volume-name][-i volume-id]
[-s sectors-per-cluster][-S logical-sector-size][-f number-of-FATs]
[-h hidden-sectors][-F fat-size][-r root-dir-entries][-R reserved-sectors]
[-M FAT-media-byte][-D drive_number]
[--invariant]
[--help]
/dev/name [blocks]
mkfs.fat 3.0.28 (2015-05-16)