topic Re: run level init 6 in Operating System - HP-UX

run level init 6

Prashant S. Kelaskar — Mon, 26 Mar 2007 23:54:11 GMT

Hi
Can anyone explain about init 6
or which is the best site to collect the information about init 6

Thanks

Prashant

Re: run level init 6

Anshumali — Tue, 27 Mar 2007 00:06:42 GMT

The run-level 5-6 states are available for user-defined operations.
Never used run level 6 or saw it running in production environment. Yet to see...

Do a man init

Re: run level init 6

Prashant S. Kelaskar — Tue, 27 Mar 2007 00:29:26 GMT

I done man init & found
0-6 init enters the corresponding run level. Run levels 0, 5, and 6 are reserved states for shutting the system down. Run levels 2, 3, and 4 are available as multi-user operating states.

Re: run level init 6

Prashant S. Kelaskar — Tue, 27 Mar 2007 00:45:20 GMT

man init show below info in HP-UX
5-6 These states are available for user-defined operations.
--------------------------------------------
Found below for Sun Solaris SunOS 5.8
Maintenance Commands init(1M)

0-6 init enters the corresponding run level. Run levels 0, 5, and 6 are reserved states for shut-ting the system down.

Run levels 2, 3, and 4 are available as multi-user operating states.

Which the best site or more info other than ?

Re: run level init 6

Jollyjet — Tue, 27 Mar 2007 00:49:14 GMT

RUNLEVELS
Run levels 0, 1 and 6 are reserved. Runlevel 0 is used to
halt the system, runlevel 6 is used to reboot the system
and runlevel 1 is used to get the system down into single
user mode. Runlevel S is not really ment to use directly,
but more for the scripts that are executed when entering
runlevel 1.For more information on this, see the manpages
for shutdown(1) and inittab(5).

Runlevels 7-9 are also valid, though not really docu-
mented. This is because "traditional" Unix variants don't
use them. In case you wonder, runlevels S and s are in
fact the same. Internally they are aliases for the same
runlevel - this is just a leftover from the systems the
author used to use when writing sysvinit.

Re: run level init 6

Rasheed Tamton — Tue, 27 Mar 2007 01:04:50 GMT

Hi Prashant,

Init commands widely used on Solaris env. HP does not recommend to use the init. The recommended is to use shutdown with different options as per your situation.

If you go to sbin dir and look for the dirs you can understand the difference. The system startup (S??) and shutdown (K??) (and runtime) scripts are bit different than Linux and Solaris.

# pwd
/sbin
# ls -ld rc?.*
dr-xr-xr-x 2 bin bin 96 May 18 1998 rc0.d
dr-xr-xr-x 2 bin bin 2048 Jan 5 1999 rc1.d
dr-xr-xr-x 2 bin bin 2048 May 18 2002 rc2.d
dr-xr-xr-x 2 bin bin 96 Nov 23 1998 rc3.d
dr-xr-xr-x 2 bin bin 96 Jun 10 1996 rc4.d
# cd rc4.d
# ll
total 0
#

Regards,
Rasheed Tamton.

Re: run level init 6

Ralph Grothe — Tue, 27 Mar 2007 04:19:55 GMT

# init 6

is common (shorthand) idiom on Solaris and Linux to reboot the machine (with init scripts being executed on those OS).
However, on HP-UX it isn't recommended.

# shutdown -g0 -i6 -y (Solaris)
or
# shutdown -r now (Linux)

are much too long ;-)

Re: run level init 6

Indrajit_1 — Tue, 27 Mar 2007 06:15:27 GMT

Hi;

Runlevel 6 is use for reboot a machine. it is equivalent to ..

#shutdown -yr 0 (HP Unix)

But, in HP Unix, there is no runlevel 6.

Cheers;
Indrajit Roy