Internet and network commands

`ethtool`	command to show if a network cable is plugged in e.a.
`ftp`	Used to establish a connection with a specified host using the File Transfer Protocol.
`ifconfig`	Displays/establishes information about the network interfaces.
`ifup`	Bring up network interface.
`ifdown`	Bring up network interface.
`iptraf`	Interactive IP LAN monitor
`iwconfig`	Displays/establishes information about the wireless interfaces.
`ip`	Used to manage IP network interfaces.
`lsof`	Command to show what processes are making use of a port e.a.
`nmap`	Command to show which ports are open e.a.
`netstat`	Displays information about the Linux networking subsystem.
`nslookup`	Looks up the numerical IP address of the specified host.
`ping`	Sends a packet to a designated address and waits for a response.
`route`	Configure IP4 routing
`scp`	Copy files over the network.
`showmount`	Displays the Network Filesystem mounts available.
`smbclient`	Launches an interactive samba utility which resembles ftp.
`smbmount`	Mounts a remote Samba service at the specified mount point.
`smbumount`	Unmounts the specified Samba mount point.
`ssh`	Control a remote computer over the network.
`telnet`	Opens a terminal window on the remote host and starts an interactive session.
`traceroute`	Prints the route that packets take to network host
`wvdial`	Initiates a PPP dial-up connection.