/usr/ is in libkaccounts-dev 4:15.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KAccounts/
/usr/lib/x86_64-linux-gnu/cmake/KAccounts/KAccountsMacros.cmake
/usr/lib/x86_64-linux-gnu/cmake/KAccounts/FindAccountsFileDir.cmake
/usr/lib/x86_64-linux-gnu/cmake/KAccounts/KAccountsTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/KAccounts/KAccountsConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KAccounts/KAccountsTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/KAccounts/KAccountsConfigVersion.cmake
/usr/include/
/usr/include/KAccounts/
/usr/include/KAccounts/kaccounts_export.h
/usr/include/KAccounts/getcredentialsjob.h
/usr/include/KAccounts/core.h
/usr/include/KAccounts/kaccountsuiplugin.h
/usr/include/KAccounts/kaccountsdplugin.h
/usr/include/KAccounts/kaccounts_version.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libkaccounts-dev/
/usr/share/doc/libkaccounts-dev/copyright
/usr/lib/x86_64-linux-gnu/libkaccounts.so
/usr/share/doc/libkaccounts-dev/changelog.Debian.gz