April 18, 2013, 2:30 PM — Here's how you can delete backups in iCloud via your Mac.
1. Go to System Preferences.
2. Go to iCloud.
3. Click the Manage button.
4. Click on Backups.
5. Select the backups you want to delete.
6. Click the Delete button.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
For more, see the original article at the link below.