Visual diff Utilities on Linux

The diff utility is widely used by programmers on linux for comparing file changes, but there are some handy, lesser-known comparison utilities that are more visual and still included for free with linux distros and Mac OS X:

  • sdiff is a text-mode side-by-side diff and merge utility. It has -B and -W options for special handling of blank lines and whitespace.
  • vimdiff lets you visually compare and edit up to 3 files in color using the vim engine.

Note: diff3 works like diff, but lets you compare and merge 3 files.

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