Automatically run an app every hour?

Question

I need to automatically run an app every hour.
I have a Time Capsule that I am getting rid of because the new UVerse fiber optic internet box does the same router functions but not the back up functions. So I want to make my external drive work like a Time Capsule. That is to mount when needed and unmount when not needed. To that end I have written an application using Applescript/Automator that does exactly that. Mounts the drive, runs the backup and unmounts the drive afterward. Now I am having a hard time finding a way to schedule it to run every hour. Most scheduler apps will only run once a day and Cronnix no longer seems to work or I can't make it work.
Any thoughts?

Answer 1

You really should use launchd. Lingon is a good tool, give it another look.
I created the following plist with Lingon.
Copy it in TextEdit, save as a plain text file (⇧⌘T) and copy it to Library/LaunchAgents (Lingon does all this for you):
You need to change the path and name of myApp:
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
font-weight: normal;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px;
color: #000000;
background-color: #E6E6EE;
overflow: auto;"
title="this text can be pasted into a text editor">
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>com.Damien.myTimeMachine</string>
<key>ProgramArguments</key>
<array>
<string>/Applications/myApp.app</string>
</array>
<key>StartInterval</key>
<integer>3600</integer>
</dict>
</plist>
</pre>