RC2(1M) INTERACTIVE UNIX System RC2(1M)
NAME
rc2 - run commands performed for multiuser environment
SYNOPSIS
/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 the
directory /etc/rc.d and files beginning with S in
/etc/rc2.d. These files 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.
The functions done by /etc/rc2 command and associated
/etc/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 /usr/tmp direc-
tories.
Loading the network interface and ports cards with pro-
gram data and starting the associated processes.
Starting the cron daemon by executing /etc/cron.
Cleaning up (deleting) uucp locks status and temporary
files in the /usr/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 /etc/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 /
/etc/mountall /etc/fstab
RMTMPFILES
# clean up /tmp
rm -rf /tmp
mkdir /tmp
chmod 777 /tmp
chgrp sys /tmp
chown sys /tmp
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RC2(1M) INTERACTIVE UNIX System RC2(1M)
uucp
# clean-up uucp locks, status, and temporary files
rm -rf /usr/spool/locks/*
The file /etc/TIMEZONE is included early in /etc/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 /etc/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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