HPUX mknod[1m]

 mknod(1M)                                                         mknod(1M)





 NAME
      mknod - create special files

 SYNOPSIS
      /etc/mknod name c major minor [cnode_name]

      /etc/mknod name b major minor [cnode_name]

      /etc/mknod name p

 DESCRIPTION
      mknod creates the following types of files:

           o  Character device special file (first SYNOPSIS form),
           o  Block device special file (second SYNOPSIS form),
           o  FIFO file, sometimes called a named pipe (third SYNOPSIS
              form).

      name is the path name of the file to be created.  The newly created
      file has a default mode readable and writable by all users (066), but
      the mode is modified by the current setting of the user's file mode
      creation mask (see umask(1)).

    Character and Block Special Files
      Character device special files are used for devices that can transfer
      single bytes at a time, such as nine-track magnetic tape drives,
      printers, plotters, disk drives operating in ``raw'' mode, and
      terminals.  To create a character special file, use c as the second
      argument to the mknod command.

      Block device special files are used for devices that usually transfer
      a block of data at a time, such as disk drives.  To create a block
      device special file, use b as the second argument to mknod.

      The remaining arguments specify the device that will be accessible
      through the new special file:

           major          This ``major number'' specifies the major device
                          type (for example, the device driver number)

           minor          This ``minor number'' specifies the device
                          location (typically, but not always, the unit,
                          drive, HP-IB bus address and/or line number).

           cnode_name     If present, cnode_name specifies the cnode name,
                          or if it is numeric, the cnode ID (see
                          glossary(9)) from which the device special file
                          can be accessed.  For non-numeric cnode names, the
                          file /etc/clusterconf is searched to determine the
                          corresponding cnode ID.




 Hewlett-Packard Company            - 1 -     HP-UX Release 9.0: August 1992






 mknod(1M)                                                         mknod(1M)





      The major and minor values can each be specified in hexadecimal,
      octal, or decimal, using C language conventions (decimal: no leading
      zero, octal: leading zero, hexadecimal: leading 0x).

      Assignment of major and minor device numbers is specific to each HP-UX
      system.  Refer to the System Administrator manuals supplied with your
      system for details.

      Only users who have appropriate privileges can use mknod to create a
      character or block device special file.

    FIFO files
      To create a FIFO (named pipe or buffer) file, use p as the second
      argument to mknod (the mkfifo command can also be used for this
      purpose - see mkfifo(1)).  All users can use mknod to create FIFO
      files.

    Access Control Lists (ACLs)
      Optional ACL entries can be added to special files and FIFOs with
      chacl(1).  However, system programs are likely to silently change or
      eliminate the optional ACL entries for these files.

 WARNINGS
    Access Control Lists
      Access control list descriptions in this entry apply only to standard
      HP-UX operating systems.  If HP MACS software has been installed,
      access control lists are handled differently.  Refer to HP MACS
      documentation for information about access control lists in the HP
      MACS environment.

 FILES
      /etc/clusterconf              For translating cnode names to cnode IDs

 SEE ALSO
      chacl(1), mkdir(1), mkfifo(1), umask(1), lsdev(1M), mkdev(1M),
      sam(1M), mknod(2), acl(5), mknod(5).

      HP-UX System Administrator manuals.

 STANDARDS CONFORMANCE
      mknod: SVID2, XPG2













 Hewlett-Packard Company            - 2 -     HP-UX Release 9.0: August 1992