Automatically install updates on OS X every day

DailySoftwareUpdates.plist

<!-- sudo DailySoftwareUpdate.plist /Library/LaunchDaemons/ -->
<!-- sudo launchctl load /Library/LaunchDaemons/DailySoftwareUpdate.plist -->

<?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>DailySoftwareUpdate</string>
    <key>ProgramArguments</key>
    <array>
    	<string>/usr/sbin/softwareupdate</string>
        <string>-i</string>
        <string>-a</string>
    </array>
    <key>StartCalendarInterval</key>
    <dict>
        <key>Hour</key>
        <integer>12</integer>
        <key>Minute</key>
        <integer>0</integer>
    </dict>
</dict>
</plist>