nmap should install ndiff, but it doesnt.
to install ndiff seperatly you have to unlink nmap and install ndiff.
but then ndiff is not working:
“can’t open file ./share/lib/ndiff/ndiff-2.00/ndiff.awk”
$ brew info ndiff
ndiff: stable 2.00 (bottled)
Virtual package provided by nmap
nmap (because both install