/usr/lib/x86_64-linux-gnu/perl5/5.26/ is in libois-perl 0.05-3build6.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/Axis.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/EventArg.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/Exception.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/InputManager.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/JoyStick.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/JoyStickEvent.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/JoyStickListener.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/JoyStickState.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/KeyEvent.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/KeyListener.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/Keyboard.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/Mouse.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/MouseEvent.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/MouseListener.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/MouseState.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/OIS/Object.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/OIS/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/OIS/OIS.so