CLEAR(1) Commands and Applications CLEAR(1)
clear - clear the terminal screen (gsh builtin)
clear
clear clears your screen if this is possible. It looks in the environā ment for the terminal type and then in 31/etc/termcap to figure out how to clear the screen.
31/etc/termcap terminal capability data base GNO 31 August 1996 CLEAR(1)