Mac Tip: Clean Applications cache (clean ‘open with’ dialogs)

From ter­mi­nal type: /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister –kill –r –domain local –domain sys­tem –domain user

Note: best to dis­able Spot­light search­ing into other dri­ves (other Mac instal­la­tions), delete mon­i­tored fold­ers in the Pri­vacy Tab.