Linux - Run Script after reboot

hobbit666

On windows you can add a registry key to run a command in the RunOnce option.

But what's the command/procedure for doing this on Linux???? I've got a script /tmp/set-up.sh that I need to run after a reboot when Root logs back in

Danp

I would use a cron job for this.

Example: http://www.cyberciti.biz/faq/linux-execute-cron-job-after-system-reboot/

DustinB3403

Cron is scheduled tasks for Linux. Definitely the way to do this.

hobbit666

Doesn't seem to be working.

systemctl status crond.service

shows cron is running.

crontab -e

added the line

@reboot /home/set-up.sh

but when I reboot and log back in as root nothing guess i'm missing something

thwr

@hobbit666 said in Linux - Run Script after reboot:

Doesn't seem to be working.

systemctl status crond.service

shows cron is running.

crontab -e

added the line

@reboot /home/set-up.sh

but when I reboot and log back in as root nothing guess i'm missing something

Not every cron implementation supports @reboot states.

DustinB3403

What distro are you using?

thwr

@DustinB3403 said in Linux - Run Script after reboot:

What distro are you using?

The question should be: which cron? vixie, anacron, fcron or systemd maybe?

DustinB3403

@thwr said in Linux - Run Script after reboot:

@DustinB3403 said in Linux - Run Script after reboot:

What distro are you using?

The question should be: which cron? vixie, anacron, fcron or systemd maybe?

I suppose, the distro should have given us that info though.

Danp

@thwr said in Linux - Run Script after reboot:

The question should be: which cron? vixie, anacron, fcron or systemd maybe?

@hobbit666 said in Linux - Run Script after reboot:

Doesn't seem to be working.

systemctl status crond.service

I would assume systemd based on the above.

Danp

Reboot again and then post the output of journalctl -u cron -n 25.

Danp

@hobbit666 said in Linux - Run Script after reboot:

added the line

@reboot /home/set-up.sh

but when I reboot and log back in as root nothing guess i'm missing something

Have you verified that the script can be run manually (have you set 'execute' permission)?

travisdh1

@hobbit666 said in Linux - Run Script after reboot:

Doesn't seem to be working.

systemctl status crond.service

shows cron is running.

crontab -e

added the line

@reboot /home/set-up.sh

but when I reboot and log back in as root nothing guess i'm missing something

I doubt /home/set-up.sh is the correct path, if it is, you need to create more users! Or did you mean /root/set-up.sh?

Danp

@travisdh1 Good eye. In the OP, he indicated /tmp, not /home.

scottalanmiller

@thwr said in Linux - Run Script after reboot:

@hobbit666 said in Linux - Run Script after reboot:

Doesn't seem to be working.

systemctl status crond.service

shows cron is running.

crontab -e

added the line

@reboot /home/set-up.sh

but when I reboot and log back in as root nothing guess i'm missing something

Not every cron implementation supports @reboot states.

But all on available Linux do.

hobbit666

Yes script runs and does what I want. I should of mentioned it has some prompts for user input.
It's a script to basically set-up networking on CentOS7 for basic IT Staff on new VM's so they don't have to edit the files direct.

So I idea is once CentOS is installed add the script to start on next boot, shut the VM down then use it to clone new ones. As it will ask for hostname and static IP.

scottalanmiller

@hobbit666 said in Linux - Run Script after reboot:

So I idea is once CentOS is installed add the script to start on next boot, shut the VM down then use it to clone new ones. As it will ask for hostname and static IP.

Interesting idea. Does it force it, or just remind to do it?

Jstear

@Danp said in Linux - Run Script after reboot:

@travisdh1 Good eye. In the OP, he indicated /tmp, not /home.

I'm with these two. Are you 100% you have the correct path?

scottalanmiller

I might implement a script like this. Care to share the script itself?

thwr

@hobbit666 said in Linux - Run Script after reboot:

So I idea is once CentOS is installed add the script to start on next boot, shut the VM down then use it to clone new ones. As it will ask for hostname and static IP.

You could also use something like Ansible instead

Jstear

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