SSH Port Forwarding for Jupyter without Wasting a Terminal Just to Channel

When launching Jupyter on server, Jupyter generates a token and it is used as access token to the Jupyter notebook.

However, the URL with the generated token is accessed through 'localhost' (at the server), and Google Colab only supports adding 'localhost' at desk machine.

In order to have server-based Jupyter added as run-time to Colab, pipe the port between desk machine and server:

ssh -L 8888:localhost:8888 SOMESERVER

However, the command above will waste a whole terminal just to do port forwarding (port channelling), 2 lines below save a whole terminal :)

#!/bin/bash
sudo pkill -f localhost:8888 & wait $!;
ssh -fNL 8888:localhost:8888 SOMESERVER;
#EOF

The option 'L' is for port forwarding as usual.
The option 'f' is to but the 'ssh' to background.
The option 'N' is a must to go along with option 'f'.