TTY characteristics

The line discipline provides the hardware-independent user interface for communicating between the computer and an asynchronous device.

For example, a user is able to erase a single line or to interrupt a currently running process by typing a particular sequence of characters. You can define the meaning of these character sequences as well as set other terminal characteristics, such as the communication speed, by using the chdev command, the System Management Interface Tool (SMIT), or the stty command.