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Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition by Paul Hudson, Andrew Hudson, Matthew Helmke

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Comparing Files

The two most common things a user wants to know when comparing two files is what in the files is the same and what is different. This is especially useful when comparing current versions of configuration files with backup versions of the same files. These commands make that task easy. Because looking for differences is more common, we start there.

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