/usr/ is in libmagickcore-6.q16-dev 8:6.9.7.4+dfsg-16ubuntu6.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7/
/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7/bin-q16/
/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7/bin-q16/Magick-config
/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.7/bin-q16/MagickCore-config
/usr/lib/x86_64-linux-gnu/libMagickCore-6.Q16.a
/usr/lib/x86_64-linux-gnu/libMagickCore-6.Q16.la
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/ImageMagick-im6.q16.pc
/usr/share/
/usr/share/bug/
/usr/share/doc/
/usr/share/doc/libmagickcore-6.q16-dev/
/usr/share/doc/libmagickcore-6.q16-dev/copyright
/usr/lib/x86_64-linux-gnu/libMagickCore-6.Q16.so
/usr/lib/x86_64-linux-gnu/pkgconfig/ImageMagick-6.Q16.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/ImageMagick-im6.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/ImageMagick.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/MagickCore-6.Q16.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/MagickCore-im6.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/MagickCore.pc
/usr/share/bug/libmagickcore-6.q16-dev
/usr/share/doc/libmagickcore-6.q16-dev/NEWS.Debian.gz
/usr/share/doc/libmagickcore-6.q16-dev/changelog.Debian.gz