/usr/ is in libroot-proof-proofplayer-dev 5.34.30-0ubuntu8.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/include/
/usr/include/root/
/usr/include/root/TPerfStats.h
/usr/include/root/TProofDraw.h
/usr/include/root/TPacketizerAdaptive.h
/usr/include/root/TProofMonSenderSQL.h
/usr/include/root/TEventIter.h
/usr/include/root/TDrawFeedback.h
/usr/include/root/TOutputListSelectorDataMap.h
/usr/include/root/TProofMonSender.h
/usr/include/root/TProofLimitsFinder.h
/usr/include/root/TVirtualPacketizer.h
/usr/include/root/TProofMonSenderML.h
/usr/include/root/TProofPlayer.h
/usr/include/root/TStatsFeedback.h
/usr/include/root/TStatus.h
/usr/include/root/TPacketizer.h
/usr/include/root/TPacketizerMulti.h
/usr/include/root/TPacketizerUnit.h
/usr/include/root/TPacketizerFile.h
/usr/include/root/TProofPlayerLite.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libroot-proof-proofplayer-dev/
/usr/share/doc/libroot-proof-proofplayer-dev/copyright
/usr/lib/x86_64-linux-gnu/libProofPlayer.so
/usr/lib/x86_64-linux-gnu/libProofDraw.so
/usr/share/doc/libroot-proof-proofplayer-dev/changelog.Debian.gz