intro(1M)                        UNIX System V                        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.

      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

      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.


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intro(1M)                        UNIX System V                        intro(1M)


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.













































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