Tiny Core Linux

Tiny Core Base => TCB Talk => Topic started by: halma on September 18, 2020, 09:18:24 AM

Title: [Solved] run a own shell at shutdown/restart how ?
Post by: halma on September 18, 2020, 09:18:24 AM

Hey all

id like to know what is the usual way under tinycorelinux 11.1 to run a shell script at shutdown or restart?
/opt/shutdown.sh seems not working...

/etc/init.d/myscript

Code: [Select]

#!/bin/busybox ash
# /etc/init.d/myscipt
#

./etc/init.d/tc-functions
useBusybox


#
#
# sichert log Dateien aus /var/log
echo "log dateien wernden gesichert..."

zielverzeichnis="/mnt/xvda/logs"
datum="$(date +"%Y-%m-%d_%H_%M")"

cd /var/log
for datei in $(ls -1); do
    tar czf "$zielverzeichnis/${datei}_${datum}.tar.gz" "$datei"
done


is simlinked from the /home/tc/myscript.sh to /etc/init.d/myscript and a modified inittab seems also not working

Code: [Select]

cat /etc/inittab
# /etc/inittab: init configuration for busybox init.
# Boot-time system configuration/initialization script.
#
::sysinit:/etc/init.d/rcS

# /sbin/getty respawn shell invocations for selected ttys.
tty1::respawn:/sbin/getty 38400 tty1
#tty2::respawn:/sbin/getty 38400 tty2
#tty3::respawn:/sbin/getty 38400 tty3
#tty4::askfirst:/sbin/getty 38400 tty4
#tty5::askfirst:/sbin/getty 38400 tty5
#tty6::askfirst:/sbin/getty 38400 tty6

# Stuff to do when restarting the init
# process, or before rebooting.
::restart:/etc/init.d/myscript
::restart:/etc/init.d/rc.shutdown
::restart:/sbin/init
::ctrlaltdel:/sbin/reboot
::shutdown:/etc/init.d/myscript
::shutdown:/etc/init.d/rc.shutdown

hvc0::respawn:/sbin/getty 38400 hvc0

How can i run a script at shutdown/restart ??
Thanks a lot and Best Regards

Title: Re: run a own shell at shutdown/restart how ?
Post by: Rich on September 18, 2020, 09:40:30 AM

Hi halma
If you shut down using  poweroff  or restart using  reboot,  no scripts will be run. Those are busybox commands.
If you run:

Code: [Select]

exitcheck.sh rebootor

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exitcheck.sh shutdownit will call  /opt/shutdown.sh.

If you use the  Exit  icon in the  GUI,  it too will call  exitcheck.sh.

If you are trying to backup  inittab  and the  symlink  in /etc/init.d, it won't work. The restore happens way too late.

Title: Re: run a own shell at shutdown/restart how ?
Post by: halma on September 20, 2020, 02:54:32 AM

Hi Rich  :)

the exitcheck.sh command is a nice, let me call it: "workaround". Thats not the solution i want to have because on mostly every linux or bsd system the way to restart or shutdown from a user is "sudo reboot/shutdown". So mostly as a normal behavior or how I learned it and how to act accordingly from the subconscious and excuse me if I say so but I don't want to learn and memorize a new command that only works for a single system like microsoft stuff.I would like to use the command that is usually standard under a linux system: sudo reboot/shutdown

I have some Questions about the reboot/shutdown behavior of tinycorelinux. The "rc.shutdown" is the only command/script which runs at reboot/shutdown. Is this "rc.shutdown" name hardcoded?
Why is myscript not executed and also other scripts before the "rc.shutdown" starts after i have send a reboot/shutdown command to the system?
I think i have correctly inittab configured seen in the first post of this thread.

Thanks a lot

Title: Re: run a own shell at shutdown/restart how ?
Post by: curaga on September 20, 2020, 03:10:48 AM

inittab is read so early in boot, to make changes in it read you need to remaster those in, instead of using backup.

edit: alternatively, sending SIGHUP to init after changing the file may work.

Title: Re: run a own shell at shutdown/restart how ?
Post by: Rich on September 20, 2020, 08:43:18 AM

Hi halma
Maybe this will work. Edit  /etc/init.d/rc.shutdown  and have it call your script like this:

Code: [Select]

#!/bin/sh
# /etc/init.d/rc.shutdown - used by /etc/inittab to shutdown the system.
#
. /etc/init.d/tc-functions
useBusybox

/etc/init.d/myscript

clear
# Sync all filesystems.
echo "${BLUE}Syncing all filesystems."
sync; sync

----- Snip -----
Add  etc/init.d/rc.shutdown  to your backup.

Title: Re: run a own shell at shutdown/restart how ?
Post by: halma on September 21, 2020, 04:17:55 PM

Hello Rich,

i had the same idea before but i dont like "hackarounds" cause its not the usually/official way, but this seems at the moemnt the only way to run a script at reboot/shutdown. Append this lines to the bootlocal.sh is doing the job

Code: [Select]

# insert personal shellscript into /etc/init.d/shutdown.rc
echo "appending personal reboot/shutdown shellscript to /etc/init.d/rc.shutdown"
shellscript_to_run="/my/script"
if ! grep "$shellscript_to_run" /etc/init.d/rc.shutdown >/dev/null; then
    sed -i '/useBusybox/a\
\
# run a script at reboot/shutdown\
'"${shellscript_to_run}"'' /etc/init.d/rc.shutdown
fi
Thanks a lot

*i cannot mark the thread a solved*

Title: Re: [Solved] run a own shell at shutdown/restart how ?
Post by: Rich on September 21, 2020, 04:41:36 PM

Hi halma
Adding a command to modify  /etc/init.d/shutdown.rc  from  /opt/bootlocal.sh  is another way of doing it. This should work
quite well if you update your sytem. Kudos on your  sed  skills.

Quote from: halma on September 21, 2020, 04:17:55 PM

... *i cannot mark the thread a solved*

That's what I'm here for. :)