and the upcoming 0.9.44 release will be even more flexible for this sort of use, because the process invoking stuff (http://www.hammerspoon.org/docs/hs.task.htm

and the upcoming 0.9.44 release will be even more flexible for this sort of use, because the process invoking stuff (http://www.hammerspoon.org/docs/hs.task.html http://www.hammerspoon.org/docs/hs.task.html ) will support processes that run indefinitely, so you could do crazy stuff like have a menubar item that shows the most recent line of a log file, or whatever you want :)