/usr/bin/combinediff
/usr/bin/dehtmldiff
/usr/bin/editdiff
/usr/bin/filterdiff
/usr/bin/fixcvsdiff
/usr/bin/flipdiff
/usr/bin/grepdiff
/usr/bin/interdiff
/usr/bin/lsdiff
/usr/bin/recountdiff
/usr/bin/rediff
/usr/bin/splitdiff
/usr/bin/unwrapdiff
You may install this package on Debian with
apt-get
install patchutils