Since I didn’t want to have to run this command from Terminal each time, I created a very simple, single-action workflow using Automator.Īs you can see, I’ve got it set up to mirror my Documents, Pictures, and Music folder. In other words, it makes the Documents folder on Lacie500 look exactly like the Documents folder on my Mac. ![]() Deletes anything on Lacie500 that is no longer in the Documents folder on my Mac.Copies anything that has changed since the last copy.Rsync -aE -delete ~/Documents/ "/Volumes/Lacie500/Documents/" ![]() For example, this command copies all of the contents of my Documents folder (under my Home folder, the ~ sign) to an external hard drive called “Lacie500”: It’s really great at backing up data and can do some powerful and mind-blowing things, most of which you need to know nothing about. Rsync is a command line utility that works on lots of operating systems, including Mac OS X. If you have a lot of data, that’s going to take a while each time, though.įortunately, there’s a really easy, free way to make this happen with almost no effort (or geekery) on your part using two tools that are already on your Mac: rsync and Automator. Granted, anyone could make this happen by dragging and dropping the contents of A to B. You want to make Folder B look exactly like Folder A. ![]() One of the most basic types of backup is the folder sync.
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