Check if Screensaver is Active using Mac Bash Script Command

Question

I've found many useful Bash commands that can execute OS X behaviors from the command line such as:

screencapture -x -C $FILENAME

Is there such a command that can check if the screen saver is active?

Answer 1

I am using this:

ps ax|grep [S]creenSaverEngine > /dev/null
if [ "$?" != "0" ] ; then
    # screen saver is not active
else
    # screen saver is active
fi