Cron job to automatically to runlevel 1 or disconnect al logged on users

foramgoram · 06-11-2008, 07:51 PM

Hi All,
I want to write a cron job that will either go to runlevel 1 at specfic time and come back to runlevel 2 after 30 minutes or just disconnect all logged on users at specific time.

Howe could it be done?
I tried to do it with sudo init 1 but the Recovery menu appears, I want that system goes directly to run level 1.

Please help

emi_ramo · 06-12-2008, 05:03 AM

First, do crontab for root:

Code:

sudo crontab -e

And then you can try with (I'm not sure at all)

Code:

/etc/init.d/single start

foramgoram · 06-12-2008, 11:53 AM

It takes me to that menu. I want to go straight to bash and run some script with cron in single user mode. But I realize that it is not possible because cron is stopped is single user mode.
Is there any way to disconnect all users automatically at specific time?

emi_ramo · 06-12-2008, 01:01 PM

You can go through crontab to single user mode at some time and create some file/mark. Then, into your /etc/rc1.d/ you can add a script to enter again to multiuser mode 30 mins later, may be similar to that:

Code:

#!/bin/bash
SEC=(( 30 * 60 ))
if [ -e /tmp/go_to_multiuser ]; then
   rm /tmp/go_to_multiuser
   sleep $SEC
   init 2
fi

With that you will not execute the script when you boot up your system, only after going to single. Just try and play!

unSpawn · 06-12-2008, 01:07 PM

Also, if you look at the init docs you see that it allows for a few more runlevels that are currently used by default. So you could have a custom runlevel 7 that basically runs like "runlevel 1" but in which the only "service" that runs is a script that has a timer, performs what tasks you want and on timer expiry telinits back to runlevel 2. As for the "killuser" part, maybe http://www.linuxquestions.org/questi...36#post3156936.