What Happens When the System Is Brought to Run Level 3

1. The init process is started and reads the /etc/default/init file to set any environment variables. By default, only the TIMEZONE variable is set.

2. Then init reads the inittab file and does the following:

   1. Identifies the initdefault entry, which defines the default run level (3).

   2. Executes any process entries that have sysinit in the action field so that any special initializations can take place before users login.

   3. Executes any process entries that have a 3 in the rstate field, which matches the default run level, 3.

      For a detailed description of how the init process uses the inittab file, see init(1M).

      The following table describes the keywords used for run level 3's action field.

      Table 11–3 Run Level 3 Action Keyword Descriptions

      Key Word	Description
      powerfail	Starts the process when the init process receives a power failure signal
      respawn	Starts the process and restarts it when it dies
      wait	Starts the process and waits for it to finish before going on to the next entry for this run level

The following table describes the processes (or commands) that are executed at run level 3.