keyPress2.lua

while true do
  local keyPress = io.read(1)
  if keyPress == "w" or keyPress == "W" then
    print("You just pressed W")
  elseif keyPress == "a" or keyPress == "A" then
    print("You just pressed A")
  elseif keyPress == "s" or keyPress == "S" then
    print("You just pressed S")
  elseif keyPress == "d" or keyPress == "D" then
    print("You just pressed D")
  elseif keyPress == "\27" then -- escape key
    print("You just pressed ESC")
    break -- exit the loop
  end
end