Time Machine backup interval

The defaults command to adjust the Time Machine backup interval is as follows, it belongs on a single line:

sudo defaults write /System/Library/LaunchDaemons/com.apple.backupd-auto StartInterval -int 14400

The last number is the time interval in seconds, making hours grouped by 3600 second segments. If you wanted to wait 4 hours between backups, the number would be 14400, and so on. The default setting is one hour, or 3600 seconds, which can be restored with:

sudo defaults write /System/Library/LaunchDaemons/com.apple.backupd-auto StartInterval -int 3600

Hit return and the default backup schedule will be restored again.