Background
I'd like to be able to display a notification window in OS X from within a script. The script will be running in background, so the notification should not go to the terminal but instead be displayed in a dialog window.
What I found so far
xmessage
On Linux I'd probably use xmessage
or one of its variants for this. But on OS X, starting the bulky X server just for this task seems both overkill and too slow for my taste.
Finder dialog
I've found a similar question in this forum thread, where the “accepted” reply suggested this command:
osascript -e 'tell app "Finder" to display dialog "Hey!"'
But on my OS X 10.7, the resulting dialog isn't displayed immediately. Instead, the Finder icon starts to bounce, and the dialog becomes visible only after I click on the icon. Too many mouse clicks, too disruptive.
Notifier
There is an answer on Super User which suggests a tool called terminal-notifier. Unfortunately that appears to only work for OS X 10.8, so it won't help in my case.
Question
So is there some tool, either included in OS X 10.7 or freely available, which allows displaying a small dialog to the user without too much overhead?
Best Answer
One option is to tell a background process like SystemUIServer to display the dialog:
You can also tell the frontmost application to display a dialog, but it's not shown immediately if the application is not responding. If MPlayer OS X is frontmost, text dialogs don't accept any keyboard input.