A UNIX shell account is a text only account for accessing internet in UNIX operating system. The shell is accessed by using a command line interface. To use and access UNIX shell accounts, UNIX commands are used. Common protocols which are used in a shell account are Telnet and SSH (Secure Shell). In this process, a terminal emulation program is used to connect to the internet. Here the host computer is treated like a computer terminal. This type of terminal emulation program was used by old computer systems. In some machines a terminal emulation program is still used to access applications. AbsoluteTelnet, Win32 console, and PuTTY are some common terminal emulation programs used in Windows operating system. For a Mac, MacTerminal, Red Ryder and ZTerm are used. In this type of arrangement, for accessing emails, Pine is used as a popular email client, and Lynx is used as the web browser. There’s no graphics or mouse in a UNIX shell account. Everything is done via UNIX commands.