can use this small and nifty utility. Create compatibility
symlinks from /usr/bin for the time being to avoid breaking
custom scripts relying on the hardcoded path to the utility.
If pkill(1) takes root, its source should be repocopied some
day to src/bin.
Idea by: des
Discussed with: brooks (in cvs-src and cvs-all)
straight from NetBSD (except to add the RCS-ID lines for FreeBSD).
These will probably require a few updates before they are added to
the FreeBSD buildworld. I might MFC these to 4.x-stable after 4.10.
Discussed on: freebsd-arch
Obtained from: NetBSD (and OpenBSD also has these)