make
sudo make install
(installs to /usr/local/bin/)
git diff | nadiff
git diff --staged | nadiff
git diff HEAD~1..HEAD | nadiff
You get the point.
n Next diff
N Previous diff
a Scroll up in left diff view
z Scroll down in left diff view
s Scroll up in right diff view
x Scroll down in right diff view
d Scroll up in both left and right diff view
c Scroll down in both left and right diff view
q Quit