diff3 (compare 3 text files, merges files)

diff3 (compare 3 text files, merges files) Compares the contents of 3 text files. Displays the lines that are different. Format: diff3 file1 file2 file3 Examples: diff3 prog1 prog2 prog3 Compares prog1, prog2, and prog3. Displays the lines that differ between the files. The lines that are different in prog1 are listed after 1:, the lines that are different in prog2 are listed after 2:, and the lines that are different in prog3 are listed after 3:. For example: cat fileA John Smith Alice Brown John Huang cat fileB Bob Smith Alice in Wonderland John Huang cat fileC Bob Smith Alice Brown John Huang diff fileA fileB fileC 1: John Smith Alice Brown 2: Bob Smith Alice in Wonderland 3: Bob Smith Alice Brown Opt What It Does Example -m Merge changes. See man page diff3 -m file1 file2 file3