Package diffstat

A utility which provides statistics based on the output of diff

http://invisible-island.net/diffstat

The diff command compares files line by line. Diffstat reads the
output of the diff command and displays a histogram of the insertions,
deletions and modifications in each file. Diffstat is commonly used
to provide a summary of the changes in large, complex patch files.

Install diffstat if you need a program which provides a summary of the
diff command's output.

General Commands
Command Description
diffstat make histogram from diff-output