intro(1M)                                                         intro(1M)


   NAME
         intro - introduction to maintenance commands and application programs

   DESCRIPTION
         This section describes, in alphabetical order, commands that are used
         chiefly for system maintenance and administration purposes.  The
         commands in this section should be used along with those listed in
         Section 1 of the User's Reference Manual and Sections 1, 2, 3, 4, and
         5 of the Programmer's Reference Manual.  References of the form
         name(1), (2), (3), (4) and (5) refer to entries in the above manuals.
         References of the form name(1M), name(7) or name(8) refer to entries
         in this manual.

         Some of the AT&T 3B2 SVR4 documentation set guides include duplicates
         of relevant manpages. In this documentation set, all manpages may be
         found in the appropriate Reference Manual and, with the exception of
         the Programmer's Guide: XWIN Graphical Windowing System, the
         Programmer's Guide: OPEN LOOK Graphical User Interface, and the OPEN
         LOOK Graphical User Interface User's Guide, are never duplicated in
         the guides.

         Because of command restructuring for the Virtual File System
         architecture, there are several instances of multiple manual pages
         with the same name.  For example, there are four manual pages called
         mount(1M).  In each such case the first of the multiple pages
         describes the syntax and options of the generic command, that is,
         those options applicable to all FSTypes (file system types).  The
         succeeding pages describe the functionality of the FSType-specific
         modules of the command.  These pages all display the name of the
         FSType to which they pertain centered and in parentheses at the top
         of the page.  Note that the administrator should not attempt to call
         these modules directly.  The generic command provides a common
         interface to all of them.  Thus the FSType-specific manual pages
         should not be viewed as describing distinct commands, but rather as
         detailing those aspects of a command that are specific to a
         particular FSType.

   COMMAND SYNTAX
         Unless otherwise noted, commands described in this section accept
         options and other arguments according to the following syntax:

               name [option(s)] [cmdarg(s)]
         where:

         name         The name of an executable file

         option       - noargletter(s) or,
                      - argletter<>optarg
                      where <> is optional white space




   8/91                                                                 Page 1

   intro(1M)                                                         intro(1M)


         noargletter  A single letter representing an option without an
                      argument

         argletter    A single letter representing an option requiring an
                      argument

         optarg       Argument (character string) satisfying preceding
                      argletter

         cmdarg       Pathname (or other command argument) not beginning with
                      - or, - by itself indicating the standard input

   SEE ALSO
         getopt(1) in the User's Reference Manual.
         getopt(3C) in the Programmer's Reference Manual.

   DIAGNOSTICS
         Upon termination, each command returns 0 for normal termination and
         non-zero to indicate troubles such as erroneous parameters, bad or
         inaccessible data, or other inability to cope with the task at hand.
         It is called variously ``exit code,'' ``exit status,'' or ``return
         code,'' and is described only where special conventions are involved.

   NOTES
         Unfortunately, not all commands adhere to the standard syntax.




























   Page 2                                                                 8/91