mknod man page on HP-UX

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mknod(1M)							     mknod(1M)

       mknod - create special files

       name major minor

       name major minor


       The command creates the following types of files:

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

       name  is	 the  path  name of the file to be created.  The newly created
       file has a default mode that is readable	 and  writable	by  all	 users
       (0666),	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, print‐
       ers, plotters, disk drives operating in "raw" mode, and terminals.   To
       create a character special file, use the argument.

       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 the argument.

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

	      major	The major number specifies the major device type  (for
			example, the device driver number).

	      minor	The  minor number specifies the device location, which
			is typically, but not always, the unit, drive,	and/or
			line number.

       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

       The  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 to create a charac‐
       ter or block device special file.

   FIFO files
       To create a FIFO (named pipe or buffer) file, use  the  argument.   You
       can  also  use the command for this purpose (see mkfifo(1)).  All users
       can use to create FIFO files.

   Access Control Lists
       In HFS file systems, optional ACL entries can be added to special files
       and  FIFOs  with	 the  command  (see  chacl(1)).	  In JFS file systems,
       optional ACL entries can be added to special files and FIFOs  with  the
       command	(see  setacl(1)).   However,  system  programs	are  likely to
       silently change or eliminate the optional ACL entries for these files.

       chacl(1), mkdir(1), mkfifo(1), setacl(1), umask(1), lsdev(1M), sam(1M),
       mknod(2), acl(5), aclv(5), mknod(5).

       HP-UX System Administrator manuals

       mknod: SVID2, SVID3, XPG2


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