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