clear
The clear command clears your screen, if possible. The clear command first checks the TERM environment variable for the terminal type. Next, the /usr/share/lib/terminfo directory, which contains terminal definition files, is checked to determine how to clear the screen. If the TERM environment variable is not set, the clear command exits without taking any action.
clear
| /usr/share/lib/terminfo | Contains terminal information database. |
The tput command.
The Input and Output Redirection Overview in AIX 5L Version 5.1 System User's Guide: Operating System and Devices describes how the operating system processes input and output and how to use redirect and pipe symbols.