rc2(1M) rc2(1M)
NAME
rc2 - run commands performed for multi-user environment
SYNOPSIS
/sbin/rc2
DESCRIPTION
This file is executed via an entry in /sbin/inittab and is
responsible for those initializations that bring the system to a
ready-to-use state, traditionally state 2, called the "multi-user"
state.
The actions performed by rc2 are found in files in the directory
/etc/rc.d and files beginning with S in /sbin/rc2.d. These files are
executed by /usr/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 multi-user, an appropriate file
should be added in /sbin/rc2.d.
The functions done by the rc2 command and associated /sbin/rc2.d
files include:
Setting and exporting the TIMEZONE variable.
Setting-up and mounting the user (/usr) file system.
Cleaning up (remaking) the /tmp and /var/tmp directories.
Loading the network interface and ports cards with program data
and starting the associated processes.
Starting the cron daemon by executing /usr/sbin/cron.
Cleaning up (deleting) uucp locks status, and temporary files
in the /var/spool/uucp directory.
Other functions can be added, as required, to support the addition of
hardware and software features.
EXAMPLES
The following are prototypical files found in /sbin/rc2.d. These
files are prefixed by an S and a number indicating the execution
order of the files.
MOUNTFILESYS
# Set up and mount file systems
cd /
/sbin/mountall /etc/fstab
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rc2(1M) rc2(1M)
RMTMPFILES
# clean up /tmp
rm -rf /tmp
mkdir /tmp
chmod 777 /tmp
chgrp sys /tmp
chown sys /tmp
uucp
# clean-up uucp locks, status, and temporary files
rm -rf /var/spool/locks/*
The file /etc/TIMEZONE is included early in rc2, thus establishing
the default time zone for all commands that follow.
FILES
Here are some hints about files in /etc/rc.d:
The order in which files are executed is important. Since they are
executed in ASCII sort-sequence order, using the first character of
the file name as a sequence indicator will help keep the proper
order. Thus, files starting with the following characters would be:
[0-9]. very early
[A-Z]. early
[a-n]. later
[o-z]. last
3.mountfs
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 command can be used
only by the super-user.
Files in /sbin/rc2.d must begin with an S or a K followed by a number
and the rest of the file name. Upon entering run level 2, files
beginning with S are executed with the start option; files beginning
with K, are executed with the stop option. Files beginning with
other characters are ignored.
SEE ALSO
shutdown(1M).
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