The Diffutils tool collection
VIVE LA DIFFÉRENCE
The Diffutils tool set helps you compare text files, discover and display the differences between files, and even automatically synchronize files.
The Diffutils are a collection of useful tools. Diff compares two text files, outputting the differences in the command line, and storing suggested changes in a patch file, which you can use to automatically modify a file, if needed. If you need to compare three text files, Diff3 is the right tool for you. Read on for more tips and tricks.