How to Mount, Unmount and Format USB pen drive using Terminal in Ubuntu/Linux Mint

Q: How do I control my USB pen drive from terminal in Ubuntu/Linux Mint
Ans:

Mounting USB pen drive
1. In Ubuntu desktop, the USB pen drive will be detected and mounted automatically. In Ubuntu server command line terminal, a message will appear to notice you that some information about the USB pen drive that has been plug in or alternatively you can use fdisk command to check whether USB has