class Tkdiff < Formula desc "Graphical side by side diff utility" homepage "http://tkdiff.sourceforge.net/" url "https://downloads.sourceforge.net/project/tkdiff/tkdiff/4.2/tkdiff-4.2.tar.gz" sha256 "734bb417184c10072eb64e8d274245338e41b7fdeff661b5ef30e89f3e3aa357" def install bin.install "tkdiff" end test do system "#{bin}/tkdiff", "--help" end end