Should everyone who uses Linux distro be aware of Command lines in Terminal?

[froggyboy604]

I notice that some Linux program installs require the use of simple short commands, so it is worth learning a few commands for Linux.

For example, Enabling the default firewall in Ubuntu requires a few commands.

sudo ufw allow ssh/tcp

[sudo] password for USER:Your Admin. USER Password

sudo ufw logging on

sudo ufw enable

sudo ufw status

http://johnson-yip.com/ubuntufirewallinstall

It seems to be quicker to use commands in Terminal that I learned then to find a suitable program with the add remove manager in some instances.