Information Technology Reference
In-Depth Information
Table 2.7
Keywords of the /etc/inittab Action Field
Keyword
Meaning
boot
Execute
process
once when the
init
program reads the
/etc/inittab
file.
Do not wait for
process
to terminate and do not restart it when it exits.
bootwait
Execute
process
the first time the system run level changes from single
user to multi-user. Wait for
process
to terminate, but do not restart it
when it exits.
initdefault
Special keyword to identify the default run level, which is specified in the
rstate
field.
off
If
process
is executing, warn of pending termination by sending it a
SIGTERM
signal, wait five seconds, and then kill
process
by sending it a
SIGKILL
signal.
once
Execute
process
when the system enters any of the run levels specified
in the
rstate
field. Do not wait for
process
to terminate and do not restart
it when it exits. If
process
is still running from a previous run level, do
not restart
process
.
ondemand
Similar to
respawn
but not associated with a run level. Only used with a,
b, or c in the
rstate
field.
powerfail
Execute
process
when
init
receives a
SIGPWR
(power failure) signal.
powerwait
Execute
process
when
init
receives a
SIGPWR
signal, but wait for
process
to terminate before continuing.
respawn
Execute
process
if it is not running. Do not wait for it to terminate, but
restart it if it does.
sysint
Execute
process
that is used to initialize devices that
init
may use to ask
about run level changes (such as the system console). Wait for
process
to terminate before continuing.
wait
Execute
process
and wait for it to terminate.
The following listing shows a sample of the default Solaris 9
/etc/inittab
file.
ap::sysinit:/sbin/autopush -f /etc/iu.ap
ap::sysinit:/sbin/soconfig -f /etc/sock2path
fs::sysinit:/sbin/rcS sysinit >/dev/msglog 2<>/dev/msglog </dev/console
is:3:initdefault:
p3:s1234:powerfail:/usr/sbin/shutdown -y -i5 -g0 >/dev/msglog 2<>/dev/msglog
sS:s:wait:/sbin/rcS >/dev/msglog 2<>/dev/msglog </dev/console
s0:0:wait:/sbin/rc0 >/dev/msglog 2<>/dev/msglog </dev/console
s1:1:respawn:/sbin/rc1 >/dev/msglog 2<>/dev/msglog </dev/console
s2:23:wait:/sbin/rc2 >/dev/msglog 2<>/dev/msglog </dev/console
s3:3:wait:/sbin/rc3 >/dev/msglog 2<>/dev/msglog </dev/console
s5:5:wait:/sbin/rc5 >/dev/msglog 2<>/dev/msglog </dev/console
s6:6:wait:/sbin/rc6 >/dev/msglog 2<>/dev/msglog </dev/console
fw:0:wait:/sbin/uadmin 2 0 >/dev/msglog 2<>/dev/msglog </dev/console
of:5:wait:/sbin/uadmin 2 6 >/dev/msglog 2<>/dev/msglog </dev/console
rb:6:wait:/sbin/uadmin 2 1 >/dev/msglog 2<>/dev/msglog </dev/console
sc:234:respawn:/usr/lib/saf/sac -t 300
co:234:respawn:/usr/lib/saf/ttymon -g -h -p “`uname -n`
console login: “ -T sun -d /dev/console -l console -m ldterm,ttcompat
