Ways to Run Processes in Terminal That Won't be Terminated

Commonly, processes run in terminal will be terminated when logging out of terminal. There are multiple ways to keep them running after closing terminal.

1) forever
https://www.npmjs.com/package/forever

2) pm2
https://pm2.keymetrics.io/docs/usage/quick-start/

3) nohup
Regular command: mycmd --arg value
Nohup command: nohup mycmd --arg value

4) setsid
Create mycmd.sh as:
#!/bin/bash
mycmd --arg value

Run:
setsid ./mycmd.sh

5) daemonize
Similar to setsid, create a shell file to run mycmd.

6) disown
Raw and powerful to separate command from terminal.
mycmd --arg value & disown $!