Disable Trackpad on available Mouse

[Lumio]

Hello,
I got my new MacBook Late 2008 and I'm looking for the option, that the trackpad gets turned off when a mouse is connected. But this feature got removed on the new Macbooks. But I still want this feature.
Is there a command in Terminal to enable this option anyway?

Thanks

 

[r.j.s]

https://forums.macrumors.com/showthread.php?p=7435268#post7435268

 

[synth3tik]

Do a search, there are a couple treads already. In one a member KEMO linked a modded pref file to use.

 

[Lumio]

Sorry and thanks