We’ve shown how to use diff to view differences between files and folders, but the output that command provides is a little confusing, especially if you are new to using the command line. Vimdiff is much more sophisticated, but because it uses highlighting to represent changes, the output is much easier to read for new users. Let’s take a look at how to compare up to three different files with vimdiff and read the output.
Maybe Microsoft is finally learning a little something from Apple in the form of fewer versions of its Windows operating system. With the forthcoming Windows 8, the company is showing restraint with only three versions, and one of them is exclusively for ARM processors.
Versions is a new feature Apple placed in Lion to allow almost any application the ability to version documents that users are working on. This means that when you save a document as you're writing, you will not only have access to the current version, but you will also have access to the previous saved versions of the same document.
Despite Apple showing off the feature, and placing documentation on their website, many questions remain unanswered: Where are the versions saved? How much space do the versions take up? Can you manually access the versions? Well, here's everything you need to know about Versions.
With Lion, Apple has included a way for developers to implement versioning control in their apps. So when you're saving files like documents you'll have access to both the past versions and current version. With a Time Machine-like interface, you’re able to view all of the changes in your documents and restore past versions if you accidentally delete something in the current version.