mknod [OPTION]... NAME TYPE [MAJOR MINOR]
Create the special file NAME of the given TYPE.
MAJOR MINOR are forbidden for TYPE p, mandatory otherwise. TYPE may be:
creates a block (buffered) special file.
creates a character (unbuffered) special file.
creates a FIFO.
sets permission mode (as in chmod), not a=rw - umask.
outputs version information and exits.