Computercraft Clear programm

os.pullEvent = os.pullEventRaw
term.clear()
term.setCursorPos(1,1)
term.setTextColor(colors.green)
print("---------------------------------------------------")
sleep(0.5)
print("")
print("          ------>> Programmliste <<------          ")
print("")
sleep(0.5)
print("---------------------------------------------------")
sleep(0.5)
shell.run("programs")
os.pullEvent = os.pullEvent
write("-->")