Ever wondered, how to keep the system on while laptop lid is closed?

Here is the answer guys.
So just follow the step by step

1. Open terminal

2. sudo gedit /etc/systemd/logind.conf

3. Type Passwd

4. Files open up

5. Uncomment the : HandleLidSwitchDocked=ignore (which can be done removing #, in the beginning of the line)

6. systemctl restart systemd-logind.service (This command would apply changes made by you).

Voilaaaa!

Bonus:
Of course, you can uncomment the thing as per your requirement in the '/etc/systemd/logind.conf'