Clicking on this entry in your cPanel (if you have access to it) will open a Java‑based terminal program that you can use to connect to any telnet or SSH server, including your own website if your web host allows it. Honestly, it is slow and not a good idea if you are going to be doing serious work. Get yourself a real SSH/Telnet client. If you want or need this feature, you probably know what it is already, and this guide would get very long indeed trying to explain all the nuances of what telnet/SSH is and how to use it. However, here are a few basics to get you started:

Telnet is a protocol for interacting remotely with a computer via a text‑based interface. SSH is a secure form of telnet. It is rare that anyone uses plain telnet these days because it is so insecure.

Having SSH access will allow you to connect directly to your account on your web host’s server and interact with it using standard Linux/Unix commands.

To learn more about SSH and Linux commands, visit http://ss64...