Linux [Electronic resources]

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