my cheat sheet on controlling Google Keystone
1 google keystone
When you install Google Chrome, you're not just getting a browser. Google's automatic update software gets installed behind the scenes on your Mac, without your consent. This how-to explains why it's there, how to manage it and how to delete it if you don't need it.
I got this info from macobserver.com
1.1 My Shell History
cd /Library/LaunchAgents/ defaults read com.google.Keystone.Agent defaults write com.google.Keystone.Agent checkInterval 259200 defaults read com.google.Keystone.Agent lst com.cisco.any* sudo rm com.cisco.any* lst
1.2 Keeping but controlling:
If you're keeping the auto-updater and want to get a feel for what Google
software is installed, when it was checked, and what update interval is,
enter this command from the terminal.
defaults read com.google.Keystone.Agent
1.3 Change the Update Interval
If you'd like change the interval when the check is made, select the desired
interval in seconds. So 3 days is 3*24*3600 seconds or 259200
Default is 18000
which is a very quick 5 hours!