Initiating shutdown prompt from terminal

[Apocrathia]

That little prompt you get when you go through the apple menu at the top left and hit shut down. It gives you 60 seconds, etc...
I want to know how to initiate that from the terminal. I keep apcupsd running on my mac mini server, and if the power goes out, i want it to tell my machines to shut down. I already have a growl message setup letting me know when the power goes out (forwarded to my iphone over prowl, etc etc). I can ssh into the systems via bash scripting and issue the command, that's np. I just have no idea wtf the command is to throw that prompt.
Anyone have any ideas?

 

[LtRammstein]

You can make an Applescript to do that. Just make sure to do a DisplayDialog and shell scripting. In Terminal.app you can type: shutdown -r now (restart), etc.

 

[Compile 'em all]

In linux I used to use halt but I didn't try it on os x.

 

[gr8tfly]

man "shutdown"

You can give a specific time or number of minutes prior to shutdown, or use "now".

 

[Apocrathia]

halt and shutdown always work, but i want to find something that will display a message. The applescript idea seems to be a good route, the question is how do i execute applescript from within a bash script. I still haven't even really touched applescript before. I've heard it's a pretty simple language.

 

[belvdr]

This is a cool way to do it:

http://www.timmatheson.com/myblog/2008/04/howto-shutdown-your-mac-with-a-text-message/#more-327