SYNOPSIS
diffstat reads the output of diff and displays a histogram
of the insertions, deletions, and modifications per-file.
It is useful for reviewing large, complex patch files.
HISTORY
I originally wrote this in 1992, along with an associated utility
rcshist, to trace the change history of collections of files.
Since then, I've found it most useful for summarizing source patches.
See the changelog for details.
Download: The source (gzip'd tar)