Looking further, it seems like ZoL provide their own Debian package that uses /usr/sbin for the location.
Reference: --- https://github.com/zfsonlinux/zfs/wiki/Debian <https://github.com/zfsonlinux/zfs/wiki/Debian> "Although ZFS On Linux is now officially in the Debian GNU/Linux repository, we will continue to provide packages for Wheezy and Jessie (but only in the amd64 architecture). The ZoL packages differ slightly compared to the official Debian GNU/Linux packages, mostly in that it provides new, improved sharenfs, sharesmb and shareiscsi options." Confirmation: --- $ dpkg -c zfsutils_0.6.5.7-8-jessie_amd64.deb | egrep -i "arc|dbufstat" -rwxr-xr-x root/root 40751 2016-05-19 18:59 ./usr/sbin/arc_summary.py -rwxr-xr-x root/root 13057 2016-05-19 18:59 ./usr/sbin/arcstat.py -rwxr-xr-x root/root 18718 2016-05-19 18:59 ./usr/sbin/dbufstat.py Regards, Eric
