mkfs(8) - build a Linux filesystem
-t, --type type
       Specify  the  type  of  filesystem  to  be  built.   If not specified, the default filesystem type
       (currently ext2) is used.

       Filesystem-specific options to be passed to the real filesystem builder.  Although not guaranteed,
       the following options are supported by most filesystem builders.
-V, --verbose
       Produce  verbose output, including all filesystem-specific commands that are executed.  Specifying
       this option more than once inhibits execution of any filesystem-specific commands.  This is really
       only useful for testing.
-V, --version
       Display version information and exit.  (Option -V will display version information only when it is
       the only parameter, otherwise it will work as --verbose.)
-h, --help
       Display help and exit.