clear terminal
clear # only clear visible screen
clear && clear # clear buffer as well
tput clear # same as clear but by sending escape seq
reset # clear + reset internal terminal state + 1sec delay
tput reset # same as reset but without 1sec delay
stty sane # don't clear screen but reset some terminal options
echo -e " 33c" # same as tput reset but hardcoded escape seq
printf " 33c" # same as tput reset but hardcoded escape seq
setterm -reset # same as tput reset, setterm has friendlier commands