How to make a js bot start automatically with the system?

Question

JavaScript

I need the script to automatically run at system startup and not turn off while the system is running.
the script is located here /home/user/bot/bot.js
I need it to execute the screen node /home/user/bot/bot.js command once
and so that every system startup

Answer 1

1. crontab (@reboot ...)
2. systemd
3. rc.local
ubuntu run command after startup