Is there a way to turn cursor acceleration off on MacBook's trackpad (not for mouse) with using Terminal?

I turned acceleration off on mouse but there is not an option for trackpad to turn it off. I don't want to download 3rd party software to fix this problem, is it possible to solve it with Terminal? I also tried defaults write .GlobalPreferences com.apple.mouse.scaling -1 command but I think it is for mouse and that's why it didn't work.