/usr/ is in graphicsmagick-libmagick-dev-compat 1.3.23-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/include/
/usr/bin/
/usr/share/
/usr/share/doc/
/usr/share/doc/graphicsmagick-libmagick-dev-compat/
/usr/share/doc/graphicsmagick-libmagick-dev-compat/copyright
/usr/share/perl5/
/usr/share/perl5/Image/
/usr/share/perl5/Image/Magick.pm
/usr/share/man/
/usr/share/man/man3/
/usr/share/man/man3/Image::Magick.3.gz
/usr/share/man/man1/
/usr/lib/pkgconfig/
/usr/include/Magick++
/usr/include/Magick++.h
/usr/include/magick
/usr/include/wand
/usr/bin/Wand-config
/usr/bin/Magick-config
/usr/bin/Magick++-config
/usr/share/doc/graphicsmagick-libmagick-dev-compat/changelog.Debian.gz
/usr/share/man/man1/Wand-config.1.gz
/usr/share/man/man1/Magick-config.1.gz
/usr/share/man/man1/Magick++-config.1.gz
/usr/lib/libMagick++.so
/usr/lib/libMagick.so
/usr/lib/libWand.so
/usr/lib/pkgconfig/ImageMagick++.pc
/usr/lib/pkgconfig/ImageMagick.pc