debian execute script on startup

[apoyusiken]

I made a .sh file and put it under init.d but it doesnt execute. I suspect it is because it needs sudo access but i thought it would just ask me for the password. How can I run this script on startup?

[ieleja]

/etc/crontab

@reboot root /root/sys/your_special_scrip.sh

 

script must be with at least with 700 permissions

 

/var/log/syslog shows errors if something goes wrong

 

p.s.

in this debug stage, you can try to run not after reboot, but

30 22    * * *   root   /root/sys/your_special_scrip.sh

(just after few minutes, and then inspect /var/log/syslog)

 

 

[apoyusiken]

9 minutes ago, ieleja said:

/etc/crontab

@reboot root /root/sys/your_special_scrip.sh

 

script must be with at least with 700 permissions

 

/var/log/syslog shows errors if something goes wrong

 

p.s.

in this debug stage, you can try to run not after reboot, but

30 22    * * *   root   /root/sys/your_special_scrip.sh

(just after few minutes, and then inspect /var/log/syslog)

 

 

well apaprently my script doesnt nee dsudo permission but when I deleted sudo it still doesnt work

 

[Ralphred]

17 hours ago, apoyusiken said:

and put it under init.d

Erm, stuff in /etc/init.d doesn't automatically get run, and will have to have start, stop, restart, and status (bare minimum) functions, and be started by your default runlevel. See if you have a /etc/local.d, putting your script in there as /etc/local.d/myscript.start and making sure it's executable (chmod gu+x /etc/local.d/myscript.start).

It really depends on your init system, if you are using sysvinit then just using

#!/bin/bash
start(){
/root/bin/myscript.sh &
exit 0
}
stop(){
killall myscript.sh
exit 0
}
status(){
ps -eo command|grep -q "^/root/bin/myscript.sh" && exit 0 || exit 1
}
restart(){
stop
sleep 1
start
}

Should be enough. System service files in /etc/init.d/ an /etc/systemd/ aren't really that complicated, and the "deamon supervisors" that are around do a really good job of keeping stuff that "doesn't background but needs to keep running" up and running. I think you need like 4 lines for a systemd service file to oneshot a script on boot.

[apoyusiken]

5 hours ago, Ralphred said:

Erm, stuff in /etc/init.d doesn't automatically get run, and will have to have start, stop, restart, and status (bare minimum) functions, and be started by your default runlevel. See if you have a /etc/local.d, putting your script in there as /etc/local.d/myscript.start and making sure it's executable (chmod gu+x /etc/local.d/myscript.start).

It really depends on your init system, if you are using sysvinit then just using

#!/bin/bash
start(){
/root/bin/myscript.sh &
exit 0
}
stop(){
killall myscript.sh
exit 0
}
status(){
ps -eo command|grep -q "^/root/bin/myscript.sh" && exit 0 || exit 1
}
restart(){
stop
sleep 1
start
}

Should be enough. System service files in /etc/init.d/ an /etc/systemd/ aren't really that complicated, and the "deamon supervisors" that are around do a really good job of keeping stuff that "doesn't background but needs to keep running" up and running. I think you need like 4 lines for a systemd service file to oneshot a script on boot.

i just want to turn on rgb

[Ralphred]

What do you run to "turn on rbg"?

I have debian VM, I'll run it up and "make it work" for you.

EDIT: I got bored. Cut and paste this into a terminal verbatim, as root:

echo "#/etc/systemd/system/rgb.service
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/root/bin/make_rgb_work.sh

[Install]
WantedBy=multi-user.target" >/etc/systemd/system/rgb.service;mkdir -p /root/bin;echo '#!/bin/bash
#insert your commands to start RGB below this line' >/root/bin/make_rgb_work.sh;chmod +x /root/bin/make_rgb_work.sh;nano /root/bin/make_rgb_work.sh;systemctl enable rgb.service;systemctl restart rgb.service