rc.config(4)                                                   rc.config(4)




 NAME    [Toc]    [Back]
      rc.config, rc.config.d - files containing system configuration
      information

 SYNOPSIS    [Toc]    [Back]
      /etc/rc.config

      /etc/rc.config.d/*

      /etc/TIMEZONE

 DESCRIPTION    [Toc]    [Back]
      The system configuration used at startup is contained in files within
      the directory /etc/rc.config.d.  The file /etc/rc.config sources all
      of the files within /etc/rc.config.d and /etc/TIMEZONE and exports
      their contents to the environment.

    /etc/rc.config
      The file /etc/rc.config is a script that sources all of the
      /etc/rc.config.d/* scripts, and also sources /etc/TIMEZONE.  To read
      the configuration definitions, only this file need be sourced.  This
      file is sourced by /sbin/rc whenever it is run, such as when the init
      command is run to transition between run states.  Each file that
      exists in /etc/rc.config.d is sourced, without regard to which startup
      scripts are to be executed.

    /etc/rc.config.d
      The configuration information is structured as a directory of files,
      rather than as a single file containing the same information.  This
      allows developers to create and manage their own configuration files
      here, without the complications of shared ownership and access of a
      common file.

    /etc/rc.config.d/* Files
      This is where files containing configuration variable assignments are
      located.

      Configuration scripts must be written to be read by the POSIX shell,
      and not the Bourne shell, ksh, or csh.  In some cases, these files
      must also be read and possibly modified by sd control scripts or the
      sam program.  See sd(4) and sam(1M).  For this reason, each variable
      definition must appear on a separate line, with the syntax:

           variable=value










 Hewlett-Packard Company            - 1 -   HP-UX 11i Version 2: August 2003






 rc.config(4)                                                   rc.config(4)




      No trailing comments may appear on a variable definition line.
      Comment statements must be on separate lines, with the # comment
      character in column one.  This example shows the required syntax for
      configuration files:

           # Cron configuration. See cron(1M)
           # Cron configuration. See cron(1M)
           #
           # CRON: Set to 1 to start cron daemon
           #
           CRON=1

      Configuration variables may be declared as array parameters when
      describing multiple instances of the variable configuration.  For
      example, a system may contain two network interfaces, each having a
      unique IP address and subnet mask (see ifconfig(1M)).  An example of
      such a declaration is as follows:

           NET_CARDS=2
           IP_ADDRESS[1]=15.1.55.2
           SUBNET_MASK[1]=255.255.248.0

           IP_ADDRESS[2]=15.1.55.3
           SUBNET_MASK[2]=255.255.248.0

      Note that there must be no requirements on the order of the files
      sourced.  This means configuration files must not refer to variables
      defined in other configuration files, since there is no guarantee that
      the variable being referenced is currently defined.  There is no
      protection against environment variable namespace collision in these
      configuration files.  Programmers must take care to avoid such
      problems.

    /etc/TIMEZONE
      The file /etc/TIMEZONE contains the definition of the TZ environment
      variable.  This file is required by POSIX.  It is sourced by /sbin/rc
      at the same time the /etc/rc.config.d/* files are sourced.

 SEE ALSO    [Toc]    [Back]
      rc(1M).


 Hewlett-Packard Company            - 2 -   HP-UX 11i Version 2: August 2003