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Comparing and Merging Files with GNU diff and patch
by David MacKenzie, Paul Eggert, and Richard Stallman
Paperback (6"x9"), 120 pages
ISBN 0954161750
RRP £12.95 ($19.95)

"Well packaged... the quality of information is excellent" --- Linux User and Developer Magazine (Issue 36, Feb 2004) Get a printed copy>>>

2.2.2 An Example of Normal Format

Here is the output of the command ‘diff lao tzu’ (see section 2.1 Two Sample Input Files, for the complete contents of the two files). Notice that it shows only the lines that are different between the two files.

1,2d0
< The Way that can be told of is not the eternal Way;
< The name that can be named is not the eternal name.
4c2,3
< The Named is the mother of all things.
---
> The named is the mother of all things.
> 
11a11,13
> They both may be called deep and profound.
> Deeper and more profound,
> The door of all subtleties!
ISBN 0954161750Comparing and Merging Files with GNU diff and patchSee the print edition