Which two statements are true regarding the effects of Issuing this command?

You use the chkconfig command to administer one of the services on your Oracle Linux system:
[root@FAROUT ~]# chkconfig vncserver off

[root@FAROUT ~] #
No changes have been made to the init script for the service.
Which two statements are true regarding the effects of Issuing this command?

You use the chkconfig command to administer one of the services on your Oracle Linux system:
[root@FAROUT ~]# chkconfig vncserver off

[root@FAROUT ~] #
No changes have been made to the init script for the service.
Which two statements are true regarding the effects of Issuing this command?

A.
The vncserver service is shut down.

B.
The vncserver service configuration is disabled only for those run levels for which it is currently
enabled.

C.
The vncserver service configuration is disabled for run levels 2, 3, 4 and 5.

D.
The vncserver service remains in the same state it was in before the command was issued.

E.
The vncserver service configuration is disabled for run levels 3 and 5 only.

Explanation:
Reference: http://www.oracle-base.com/articles/linux/configuring-vnc-server-on-linux.php



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Djuro

Djuro

Answer is C, D

A

A

Option A Explain:

If one of on, off, or reset is specified after the service name, chk-
config changes the startup information for the specified service. The
on and off flags cause the service to be started or stopped, respec-
tively, in the runlevels being changed. The reset flag resets the
startup information for the service to whatever is specified in the
init script in question.

Marc

Marc

[root@olite-emea rc3.d]# chkconfig –list | grep vnc
vncserver 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[root@olite-emea rc3.d]# chkconfig vncserver off
[root@olite-emea rc3.d]# chkconfig –list | grep vnc
vncserver 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[root@olite-emea rc3.d]# chkconfig vncserver on
[root@olite-emea rc3.d]# chkconfig –list | grep vnc
vncserver 0:off 1:off 2:on 3:on 4:on 5:on 6:off

Jef Adams

Jef Adams

[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:on 3:on 4:on 5:on 6:off

[Jef@ToshibaZ30-Jef etc]$ sudo chkconfig rhnsd off

[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
—> A, B (=obvious), C True also
—> not E, not D

[Jef@ToshibaZ30-Jef etc]$ sudo chkconfig rhnsd on
[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[Jef@ToshibaZ30-Jef etc]$ sudo chkconfig –level 5 rhnsd off
[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:on 3:on 4:on 5:off 6:off

[Jef@ToshibaZ30-Jef etc]$ sudo chkconfig rhnsd off
[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[Jef@ToshibaZ30-Jef etc]$ sudo chkconfig rhnsd on
[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
—> rhnsd service back on for 2,3,4 obvious and 5 which was off before

[Jef@ToshibaZ30-Jef etc]$ sudo chkconfig –level 5 rhnsd off
[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:on 3:on 4:on 5:off 6:off
[Jef@ToshibaZ30-Jef etc]$ sudo chkconfig rhnsd reset —> back to default value
[Jef@ToshibaZ30-Jef etc]$ chkconfig | grep rhnsd

rhnsd 0:off 1:off 2:on 3:on 4:on 5:on 6:off

from man chkconfig :

If one of on, off, reset, or resetpriorities is specified after the service name, chkcon‐
fig changes the startup information for the specified service. The on and off flags
cause the service to be started or stopped, respectively, in the runlevels being changed.
The reset flag resets the on/off state for all runlevels for the service to whatever is
specified in the init script in question, while the resetpriorities flag resets the
start/stop priorities for the service to whatever is specified in the init script.

By default, the on and off options affect only runlevels 2, 3, 4, and 5, while reset and
resetpriorities affects all of the runlevels. The –level option may be used to specify
which runlevels are affected.

So most correct answer should be A,C

Jef Adams

Jef Adams

The service will be stopped the next time you enter one of these runlevels. If you need to stop the service immediately, use the service command as described in Section 11.3.3, “Stopping a Service”.

So correct Answers are C,D NOT A

Tolun

Tolun

We are not shutting down the service that is why is in same stated, D is correct

We do not know what is the current configuration that is why we can not decide which run levels is disabled after issuing the command. We can only guess that it has been disable on run levels which currently enabled, B is correct also.

Dilliadis

Dilliadis

C, D, – be sure guys

Alex

Alex

CD
Use man to check chkconfig off, it has a clear explanation.

Sam

Sam

C & D is correct ans .

Below is the real time explanation .

ans c . The vncserver service configuration is disabled for run levels 2, 3, 4 and 5.

Real time o/p

[root@soa11g rc3.d]# chkconfig –list vncserver
vncserver 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[root@soa11g rc3.d]# chkconfig off vncserver
[root@soa11g rc3.d]# chkconfig vncserver off
[root@soa11g rc3.d]# chkconfig –list vncserver
vncserver 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[root@soa11g rc3.d]# /etc/init.d/vncserver status
Xvnc (pid 6746) is running…

explanation
so here after firing chkconfig vncserver off run level 2,3,4,5 in pervious chkconfig vncserver list cmd you cam see 2,3,4,5 are in on remains other are in off state .

And after firing this chkconfig vncserver off still vncserver is running in the same PID .