[Koha] how to upgrade

Hello, I have installed koha 3.12 on ubuntu by packages, It is successful. Now, I would like know, how to upgrade from 3.12 to 3.14 ? Does the following 3 commands upgrade to latest version? and How to know, up-gradation is successful, once it is completed? apt-get update apt-get upgrade apt-get dist-upgrade thank you Ram.