| Action
| A 20-character parameter that informs the init command how to
process the Command parameter you specify. The
init command recognizes the following actions:
- boot
- Read this record only when the system boots and reads the /etc/inittab file. The init
command starts the process. Do not wait for the process to stop, and
when it does stop, do not restart the process. The run level for this
process should be the default, or it must match the run level specified by
the init command at startup time.
- bootwait
- Read this record only when the system boots and reads the /etc/inittab file. The init
command starts the process. Wait for it to stop, and when it does stop,
do not restart the process.
- hold
- When the process identified in this record is terminated, do not start a
new one. The hold action can only be activated by the
phold command.
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- initdefault
- Start the process identified in this record only when the init command is originally invoked. The
init command uses this line to determine which run level to
originally enter. It does this by taking the highest run level
specified in the RunLevel field and using
that as its initial state. If the RunLevel parameter is
empty, this is interpreted as 0123456789, and the init command
enters a run level of 9. If the init command does
not find an initdefault line in the /etc/inittab file, it requests an initial run
level from the operator at initial program load (IPL) time.
- off
- If the process identified in this record is currently running, send the
warning signal SIGTERM and wait 20 seconds before sending the
SIGKILL kill signal. If the process is nonexistent, ignore
this line.
- once
- When the init command enters the run level
specified for this record, start the process, do not wait for it to stop, and
when it does stop, do not restart the process. If the system enters a
new run level while the process is running, the process is not
restarted.
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- ondemand
- Functionally identical to respawn. If the process
identified in this record does not exist, start the process. If the
process currently exists, do nothing and continue scanning the /etc/inittab file. Specify this action to
perform the respawn action when using a, b,
or c run levels.
- powerfail
- Start the process identified in this record only when the init command receives a SIGPWR power
fail signal.
- powerwait
- Start the process identified in this record only when the init command receives a SIGPWR power
fail signal, and wait until it stops before continuing to process the /etc/inittab file.
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- respawn
- If the process identified in this record does not exist, start the
process. If the process currently exists, do nothing and continue
scanning the /etc/inittab file.
- sysinit
- Start the process identified in this record before the init command tries to access the console.
For example, you might use this to initialize devices.
- wait
- When the init command enters the run level
specified for this record, start the process and wait for it to stop.
While the init command is in the same run level, all subsequent
reads of the /etc/inittab file ignore this
object. If you are operating in a diskless environment, specifying the
wait action causes your system to boot more quickly.
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| Command
| A 1024-character field specifying the shell command.
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| Identifier
| A 14-character parameter that uniquely identifies an object. The
Identifier must be unique. If the Identifier is
not unique, the command is unsuccessful. The Identifier
cannot be changed; if you try to change it, the command is
unsuccessful.
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| RunLevel
| A 20-character parameter defining the run levels in which the
Identifier can be processed. Each process started by the init command can be assigned one or more run
levels in which it can be started.
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