Installation guide

run level for initdefault is set to 3, which is the multiuser with network

services mode:

is:3:initdefault:

4.1.1.2 Specifying wait Run Levels

The init program looks in the inittab ﬁle for the wait entries. In the

previous inittab ﬁle example, the following line contains a wait entry:

fs:23:wait:/sbin/bcheckrc < /dev/console > /dev/console 2>&1

In this case, the init program invokes the /sbin/bcheckrc script for the

fs entry. Processes associated with this entry execute at run levels 2 and 3.

Input comes from the system console (/dev/console). System and process

error messages are sent to the console (> /dev/console 2>&1).

The bcheckrc run command script contains procedures associated with ﬁle

system checking and mounting. See the /sbin/bcheckrc ﬁle for details.

4.1.1.3 Specifying bootwait Run Levels

The init program looks in the inittab ﬁle for the bootwait entry. In the

previous inittab ﬁle example, the following line contains a bootwait

entry:

kmk:3:bootwait:/sbin/kmknod > /dev/console 2>&1

In this case, the init program invokes the /sbin/kmknod script for the

kmk entry.

4.1.1.4 Specifying Console Run Levels

Before you or anyone else can log in to your system, the getty program for

nonworksystems and the xdm program for worksystems must set up the

process that runs the login and shell programs for each terminal and

workstation, respectively. Because a large portion of your initial work is

done at the system console, the /etc/inittab ﬁle contains an entry for

setting up a getty process for the console. The xdm process is started with

a run-level script in the /sbin/rc3.d directory.

In the previous example of the inittab ﬁle, the following line contains the

entry for the system console:

cons:1234:respawn:/usr/sbin/getty console console vt100

The init program is instructed to invoke the getty program, which sets

the terminal line attributes for the system console (/dev/console). The

run-level ﬁeld speciﬁes that the getty process executes at run levels 1, 2,

Customizing the System Environment 4–7