terminal to update linux ubuntu

As you all know that we need terminal to update and to install any application but if you are not comfortable with this terminal idea and commands then there is another way to install appliactions on ubuntu and to update too...
To Update ubuntu you can go to System>>Administration>>Update Manager
and to install any application we have 2 ways apart from terminal
1. Click on Main Menu and under that go to add/ remove application
2. Click on System>>Administration>>Synaptic Package Manager
but i like Terminal only and trust me if you are using linux then try using Terminal only

additional tip :) try these commands
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