res=$(osascript -e "tell application \"System Events\" to get name of application processes whose frontmost is true and visible is true");
if [ $res == "Kim" ]
then
osascript -e "tell application \"System Events\" to set visible of process \"Kim\" to false"
else
open -a 'Kim.app'
fi
I did it like this, it works but excutes very slow, how to optimize this?