Bash script to run automatically after server restart

Question

I have a script, it restarts tomcat in 2 minutes,, I would like that this script was started constantly after server restart, I will be grateful if someone shows how to do it?

 #! /bin/bash sleep 120 systemctl restart tomcat

Answer 1

Read archwiki about systemd/Timer or maybe original freedesktop documentation about systemd.timer .

Create a file my_super_tomcat_restarter.timer in /etc/systemd/system/ :

[Unit]
Description=Superbly restart my tomcat service every 120 seconds!

[Timer]
OnBootSec=120sec
OnUnitActiveSec=120sec

[Install]
WantedBy=timers.target

Create a file my_super_tomcat_restarter.service in /etc/systemd/system/ with the content:

[Unit]
Description=Superbly restart tomcat service!

[Service]
Type=oneshot
ExecStart=/usr/bin/systemctl restart tomcat

Execute from your terminal as root :

systemctl enable my_super_tomcat_restarter.timer

The timer should fire in 120 seconds and execute my_super_tomcat_restarter.service which in turn will restart your tomcat service.

Answer 2

either add it in init.d or systemd based on your Linux distribution of yours. in both cases you have to be root to add your script.