It explains commands and tools which are useful while networking with both computers and across the world wide web. It also used in network configuration, remote machines and file transfer.


It captures packets off a network. It knows all basic internet protocols.


It displays contents of /proc/net files. It tells the status of ports; which of them are open, closed etc.


It send echo requests to host which you specify with in the command line and after processing it lists the responces. To stop ping press CTRL + C


ping host_name


It tells you the hostname of the computer in which you are logged in.


It lists the series of hosts through which packets travel to their destination


traceroute name_of_machine or IP


It used for the query of local and remote machines, what ports are open in those machines etc.


nmap name_of_machine


It lists the info of the machines that respond to SMB name queries.