An emulator is a software application that allows your system to function as if you were using a different terminal or printer. Several applications are available to allow your system to emulate other types of terminals. Emulators Introduction A terminal emulator connects to a host system to access data or applications.
Some terminal emulators provide a facility to transfer files to and from the host.
A printer emulator allows the host either to print files on a local printer or store them in printable form to be printed or edited later. It is different from the rlogin command in that it is a trusted command. A trusted command is one that meets all security levels configured on your computer. The tn command performs the same function as the telnet command. The only difference is that the rlogin command is considered a nontrusted command and can be disabled if your system needs extra security.