DSM-G600, DNS-3xx and NSA-220 Hack Forum

arunbav · 2009-04-24 05:34:08

I am trying to set up some cron jobs on my dns-323. I created a bin directory in /home/root put in a shell script blah.sh ( made it executable and also did a chattr +i on it for good measure.). Then I set up a chronjob via crontab -e to run blah.sh on regular intervals. The chron job seems to take (i.e. /var/spool/cron/crontabs/root) shows the job as being scheduled. So now I restart the dns-323 (via the web interface) and when I check back /home/root the bin directory is not there neither is the chronjob entry in /var/spool/cron/crontabs/root. What gives??

mig · 2009-04-24 08:07:53

arunbav wrote:
What gives??

The /root file system resides in RAM and is recreated from flash every reboot. (see /etc/rc.sh)
If you want your changes to survive reboot, you need to create a script that applies
the changes after each reboot.

Last edited by mig (2009-04-24 08:08:44)

arunbav · 2009-04-24 16:03:47

Thanks. I can put the shell scripts in a different system bin folder which does not get rewritten every reboot. But how do I set up the chron jobs so that they do not disappear on restart?

fonz · 2009-04-24 16:10:17

you can also move root's home directory to disk, e.g.: usermod -d /mnt/HD_a2/root root (then run store-passwd.sh)

arunbav · 2009-04-24 17:37:05

Fonz,
I tried it but I get a "Could not chdir to home directory /mnt/HD_a2/root: No such file or directory". I suppose I should create the /mnt/HD_a2 directory? What should the permissions be? 755? Thanks
Arun.

fonz · 2009-04-24 17:41:10

yes, of course, 755 is ok, mkdir -p /mnt/HD_a2/root

mig · 2009-04-24 18:16:18

arunbav wrote:
But how do I set up the chron jobs so that they do not disappear on restart?

One techinque is to write a script that recreates the cron jobs at each reboot, similar to the 'editcron.sh' in this post :
http://dns323.kood.org/forum/viewtopic. … 637#p28637

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#1 2009-04-24 05:34:08

Files and Directories in /home/root and cronjobs disappear on restart

#2 2009-04-24 08:07:53

Re: Files and Directories in /home/root and cronjobs disappear on restart

arunbav wrote:

#3 2009-04-24 16:03:47

Re: Files and Directories in /home/root and cronjobs disappear on restart

#4 2009-04-24 16:10:17

Re: Files and Directories in /home/root and cronjobs disappear on restart

#5 2009-04-24 17:37:05

Re: Files and Directories in /home/root and cronjobs disappear on restart

#6 2009-04-24 17:41:10

Re: Files and Directories in /home/root and cronjobs disappear on restart

#7 2009-04-24 18:16:18

Re: Files and Directories in /home/root and cronjobs disappear on restart

arunbav wrote:

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