скрыть Active App от дока

# replace [AppName] with the name of the app you want hidden
/usr/libexec/PlistBuddy -c 'Add :LSUIElement bool true' /Applications/[AppName].app/Contents/Info.plist

# revert
/usr/libexec/PlistBuddy -c 'Delete :LSUIElement' /Applications/[AppName].app/Contents/Info.plist
Defiant Dragonfly