This is last & final chapter of this tutorial. Before proceeding further, I would like to link first two parts here just incase you haven't checked it out.

(PART-1  &  PART-2)

Continuing from Part-2,

19) Checking The Stats Of Cache Using APT-CACHE :

This command will display all the statistics of the cache …

This is second part of the tutorial.You would like to read the first part before you proceed further. Here is the LINK.

Continuing from the first part,

11) Removing Packages From The System Using APT-GET :

This command will help you to remove the installed packages from the system. However …

APT abbreviated as Advanced Packaging Tool, is the package management tool used in Debian based distributions to install new applications from repository, removing installed applications, upgrading the system, updating the repository and bunch full of other useful tasks, all that from terminal itself.