Mandatory arguments to long options are mandatory for short options too.
set file permission bits to MODE, not a=rw - umask
set the SELinux security context of NAME to CTX
display this help and exit
output version information and exit
Both MAJOR and MINOR must be specified when TYPE is b, c, or u, and they
must be omitted when TYPE is p. If MAJOR or MINOR begins with 0x or 0X,
it is interpreted as hexadecimal; otherwise, if it begins with 0, as octal;
otherwise, as decimal. TYPE may be:
create a block (buffered) special file
create a character (unbuffered) special file
create a FIFO
NOTE: your shell may have its own version of mknod, which usually supersedes
the version described here. Please refer to your shell's documentation
for details about the options it supports.