/usr/ is in avahi-discover 0.6.31-4ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/python2.7/
/usr/lib/python2.7/dist-packages/
/usr/lib/python2.7/dist-packages/avahi_discover/
/usr/lib/python2.7/dist-packages/avahi_discover/__init__.py
/usr/bin/
/usr/bin/avahi-discover
/usr/share/
/usr/share/applications/
/usr/share/applications/avahi-discover.desktop
/usr/share/man/
/usr/share/man/man1/
/usr/share/man/man1/avahi-discover.1.gz
/usr/share/doc/
/usr/share/doc/avahi-discover/
/usr/share/doc/avahi-discover/copyright
/usr/share/avahi/
/usr/share/avahi/interfaces/
/usr/share/avahi/interfaces/avahi-discover.ui
/usr/share/doc/avahi-discover/changelog.Debian.gz
/usr/share/doc/avahi-discover/NEWS.gz
/usr/share/doc/avahi-discover/README