(SOLVED) script at (or just before) shutdown

[Hans Troost]

Hi all,

I made a shell-script to backup my home-folder and mysql-database using rsync.

Backup destination: a mounted (/mnt/backup) share on a NAS (Lacie Ethernet Minidisk)

1. Due to the permissions on /var/lib/mysql and sub-directories I want to run it as root.
2. I want to execute this script automatically after clicking the shutdown button (so end-of-the-day when I shutdown my machine, as I always do overnight)

Consequently I want to "embed" it in the normal shutdown procedure (whatever this perfect distro does).

Since update-rc.d is not recognized as command I tried to do it manually:

1. placed a testshutdownscript.sh in /etc/init.d
2. made a symbolic link to it in /etc/rc0.d

listing:
[hans@localhost rc0.d]$ ls -l S*
lrwxrwxrwx 1 root root 17 2010-07-03 15:11 S00killall -> ../init.d/killall*                                                                
lrwxrwxrwx 1 root root 14 2010-07-03 15:11 S01halt -> ../init.d/halt*                                                                      
lrwxrwxrwx 1 root root 33 2010-09-08 16:29 S30test -> /etc/init.d/testshutdownscript.sh*                                                    
[hans@localhost rc0.d]$

But this seems not to work.

Can anybody tell me how to do this?

I do not dare to play around to much with this "internal" stuff, so I did not take the risk to do:

rename S01halt to S02halt, S00lillall to S01killall and my S30test to S00test, but maybe that is the solution?

Hope that someone can help me out!

Regards,

Hans Troost

[daniel]

Maybe you can work with sleeptimer...
The script is here to see.
What you can is to add your commands or change the commands before it shutdown your system...

Good Luck 

[Bald Brick]

I do not dare to play around to much with this "internal" stuff, so I did not take the risk to do:

rename S01halt to S02halt, S00lillall to S01killall and my S30test to S00test, but maybe that is the solution?

You made me curious and the solution above sounded logical so I tested it. It does work. (Obviously you can't run a script after the system has been halted.)

But note that the "test.sh" I created only wrote one word to a file in my home directory (a file that I imaginatively called "test.txt"). Of course it wouldn't have worked if the script had depended on any of the gazillion daemons that are listed to be killed before whatever S00xxx points to is run.

I'd be a bit wary though of adding the link to /etc/rc.d/rc0.d permanently. I feel that going to runlevel 0 should do just one thing: shut down the system cleanly. So if Leiche's script works for you I'd stick with his solution.

[menotu]

(a file that I imaginatively called "test.txt")

I wonder just how many files are littered around the worlds PC's with the name "test.*"   

[Hans Troost]

Just tried (as blackbird did):

[hans@localhost ~]$ ls -l /etc/rc0.d/S*
lrwxrwxrwx 1 root root 31 2010-09-08 17:02 /etc/rc0.d/S00test -> ../init.d/testshutdownscript.sh*
lrwxrwxrwx 1 root root 17 2010-07-03 15:11 /etc/rc0.d/S01killall -> ../init.d/killall*
lrwxrwxrwx 1 root root 14 2010-07-03 15:11 /etc/rc0.d/S02halt -> ../init.d/halt*

testshutdownscript:
#!/bin/bash
#
id > /home/hans/shutdown1.log
ls -R /mnt/backup >> /home/hans/shutdown2.log

Result (as could be expected):
1st command: expected id output in ~/shutdown1.log (owner of course root:root)
2nd listing: just this text: /mnt/backup : in ~/shutdown2.log (owner of course root:root)

So indeed, what blackbird already feared: one of the Knnnetwork* scripts already killed the network, so my NAS unreachable.

Did not try Leiche's sleeptimer up to now: not really looking for something like that. But thanks for the suggestion!

Now I will try to figure out hot to run a shell script when logging out, but under root privs.

Regards,

Hans Troost

[Hans Troost]

Now I will try to figure out hot to run a shell script when logging out, but under root privs.

Created the following solution (with only 1 drawback):

1. Created my simple backup-script with 2 rsync commands
    1st rsync [options] home-folder to NAS
    2nd sudo rsync [options] /var/lib/mysql to NAS
2. to enable the 2nd without a password I added the following line to sudoers:
    <username>    ALL=(root) NOPASSWD: /usr/bin/rsync
3. the trick:
    created a symbolic link to the backup-script in ~/.kde4/shutdown/

• Drawback (compared to direct use of runlevel 0): the script is executed on every shutdown, so on reboot as well. Runlevels enable distinguishing between shutdown (level 0) and reboot (level 6)
• Considered to remove the Knnnetwork links from rc0.d and rely on the S00killall, but decided to go for the above described solution

Thanks for your support and hopefully others can benefit as well from this solution.

Regards,

Hans Troost