rc2(ADM)
rc2 --
run commands performed for multiuser environment
Syntax
/etc/rc2
Description
This file is executed via an entry in /etc/inittab
and is responsible for those initializations
that bring the system to a ready-to-use state,
traditionally state 2, called the ``multiuser'' state.
The actions performed by /etc/rc2
are found in files in several directories and are executed in a prescribed
order to ensure proper initialization.
/etc/rc2
performs the following functions in the order in which they appear:
-
Runs the system setup scripts in the directory /etc/rc2.d.
Some of the scripts in this directory are front-end scripts
to run other scripts in the subdirectories of /etc/rc.d.
-
Runs the system setup scripts in the directory /etc/idrc.d,
which contains scripts from the driver packages linked from
/etc/conf/rc.d.
-
Runs system setup scripts in the directory /etc/rc.d.
This directory exists for XENIX compatibility.
It contains subdirectories named with the numerals 0 to 9.
Each subdirectory contains scripts that perform certain system startup
functions (for example, the directory /etc/rc.d/3
contains scripts that handle crash recovery).
All of these scripts are run by the front-end scripts in
/etc/rc2.d.
Any other individual scripts in the directory are run.
-
Runs the script /etc/rc.
This script exists for XENIX compatibility.
It is an empty file, but you can add initialization commands to the file.
These commands are run last during the initialization.
The setup scripts are executed by
/bin/sh in ASCII sort-sequence order
(see ``Files'' for more information).
When functions are added that need to be initialized when the
system goes multiuser, an appropriate file should be added in
/etc/rc2.d.
Other functions can be added, as required, to support the
addition of hardware and software features.
Warning
These files are intended for execution by init. They
must never be executed directly by a user.
Files
Files in /etc/rc.d are executed in ASCII
collation sequence order.
Thus, files starting with the following characters would run accordingly:
[0-9] earliest
[A-Z] early
[a-n] later
[o-z] last
Files in /etc/rc.d that begin with a dot (.)
will not be executed. This feature can be used to hide files that are
not to be executed for the time being without removing them.
The files in /etc/rc2.d are run in the order when
sorted on their filenames from the second character onward
(according to the ASCII collation sequence).
The first character of the filename determines how the files
are run on entering run level 2:
K
-
scripts executed in serial sequence of their sort order
when stop is specified to
prc_sync(ADM)
S-
scripts executed in serial sequence of their sort order
when start is specified to
prc_sync
P-
scripts which
prc_sync
executes in parallel with other P
scripts to which they are adjacent when sorted
I-
interactive scripts for which
prc_sync
will wait until they complete executing and exit
Files beginning with other characters are ignored.
Important scripts in
/etc/rc2.d are:
P00SYSINIT-
runs /etc/rc.d/0 and /etc/rc.d/1
scripts
I01MOUNTFSYS-
mounts filesystems
and runs /etc/rc.d/2 scripts
P03RECOVERY-
runs /etc/rc.d/3 scripts
P15HWDNLOAD-
runs /etc/rc.d/5 scripts
P16KERNINIT-
runs /etc/rc.d/6 scripts
P20sysetup-
generates the system ID file (/etc/systemid)
P70uucp-
cleans up
uucp(C)
locks, status, and temporary files
P75cron-
starts the
cron(C)
daemon
P87USRDAEMON-
runs /etc/rc.d/7 scripts
P88USRDEFINE-
runs /etc/rc.d/8 scripts
P90RESERVED-
runs /etc/rc.d/9 scripts
S02audit-
initiates auditing
See also
prc_sync(ADM),
shutdown(ADM),
init(M),
rc0(ADM)
``Starting and stopping the system'' in Starting and stopping the system
© 2005 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 -- 03 June 2005