/usr/lib/x86_64-linux-gnu/qt5/examples/ is in qtwebchannel5-examples 5.7.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatclient-qml/
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatclient-qml/chatclient-qml.pro
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatclient-qml/qmlchatclient.qml
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatclient-qml/qwebchannel.js
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatserver-cpp/
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatserver-cpp/chatserver
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatserver-cpp/chatserver-cpp.pro
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatserver-cpp/chatserver.cpp
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatserver-cpp/chatserver.h
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/chatserver-cpp/main.cpp
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/exampleassets.pri
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/nodejs/
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/nodejs/README
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/nodejs/chatclient.js
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/nodejs/nodejs.pro
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/nodejs/package.json
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/nodejs/qwebchannel.js
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/qwclient/
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/qwclient/README
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/qwclient/package.json
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/qwclient/qwclient.js
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/qwclient/qwclient.pro
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/qwclient/qwebchannel.js
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/shared/
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/shared/websocketclientwrapper.cpp
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/shared/websocketclientwrapper.h
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/shared/websockettransport.cpp
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/shared/websockettransport.h
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/standalone/
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/standalone/dialog.ui
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/standalone/index.html
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/standalone/main.cpp
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/standalone/qwebchannel.js
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/standalone/standalone
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/standalone/standalone.pro
/usr/lib/x86_64-linux-gnu/qt5/examples/webchannel/webchannel.pro