mknod name b | c major minor 
 mknod name p

   mknod makes a directory entry for a special file.

   name is the special file to be created. The second argument is either
   b, to indicate a block-type special file, or c, to indicate a
   character-type. The last two arguments are numbers specifying the
   major and minor device numbers; these may be either decimal or octal.
   The assignment of major device numbers is specific to each system. You
   must be a privileged user to use this form of the command.

   The second case is used to create a FIFO (named pipe).

   For example

   # mknod test b 100 200

   The # is the prompt displayed by the root shell, test is the name
   of the node you want to create, type can be b for block or c for
   character.

   # mknod p test1

   The # is the prompt displayed by the root shell, test1 is the name
   of the FIFO or named pipe.

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