(A) Browsing and navigating directories
List files and directories in the current directory: [ls] list command
Prints the path name to the present working directory: [pwd] print working directory command
Change the current directory:
(1) Up one level: [cd ../]
(2) To home: [cd ~ or cd]
(3) To some other directory: [cd path_to_directory]
(B) Upgrading and installing packages
Fetch and display up-to-date information about all upgradable packages: [sudo apt update]
Upgrade to the latest supported version of nano: [sudo apt upgrade nano]
Install Vim: [sudo apt install vim]
(C) Creating and editing files
Create a new text file and open it with nano: [nano file_name.txt]