/usr/ is in indicator-sound 12.10.2+18.04.20180420.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/systemd/
/usr/lib/systemd/user/
/usr/lib/systemd/user/indicator-sound.service
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/indicator-sound/
/usr/lib/x86_64-linux-gnu/indicator-sound/indicator-sound-service
/usr/share/
/usr/share/accountsservice/
/usr/share/accountsservice/interfaces/
/usr/share/apport/
/usr/share/apport/package-hooks/
/usr/share/apport/package-hooks/source_indicator-sound.py
/usr/share/dbus-1/
/usr/share/dbus-1/interfaces/
/usr/share/dbus-1/interfaces/com.canonical.indicator.sound.AccountsService.xml
/usr/share/doc/
/usr/share/doc/indicator-sound/
/usr/share/doc/indicator-sound/changelog.Debian.gz
/usr/share/doc/indicator-sound/copyright
/usr/share/glib-2.0/
/usr/share/glib-2.0/schemas/
/usr/share/glib-2.0/schemas/com.canonical.indicator.sound.gschema.xml
/usr/share/polkit-1/
/usr/share/polkit-1/actions/
/usr/share/polkit-1/actions/com.canonical.indicator.sound.AccountsService.policy
/usr/share/unity/
/usr/share/unity/indicators/
/usr/share/unity/indicators/com.canonical.indicator.sound
/usr/share/upstart/
/usr/share/upstart/sessions/
/usr/share/upstart/sessions/indicator-sound.conf
/usr/share/upstart/systemd-session/
/usr/share/upstart/systemd-session/upstart/
/usr/share/upstart/systemd-session/upstart/indicator-sound.override
/usr/share/accountsservice/interfaces/com.canonical.indicator.sound.AccountsService.xml