Command name: ls - ls is a command that shows you all of the items located within a file or directory. When you use “ls -l (APPNAME)” it will show you the read, write, and execute functionality.
Command name: env - env is a tool used by linux services to print or list environment variables without having to modify the currently existing environment. The most helpful version of this command would be “$env –version”
Command name: Netstat - The main functionality of the netstat command would be to find the network status as well as the current ports in use. Nestat -a shows all active tcp connections. -b displays what program created the programs listening to which ports. -e displays ethernet adapter information, etc.