/usr/ is in libshout3-dev 2.3.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/shout/
/usr/include/shout/shout.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libshout.a
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/shout.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libshout3-dev/
/usr/share/doc/libshout3-dev/examples/
/usr/share/doc/libshout3-dev/examples/example.c
/usr/share/doc/libshout3-dev/copyright
/usr/share/aclocal/
/usr/share/aclocal/shout.m4
/usr/lib/x86_64-linux-gnu/libshout.so
/usr/share/doc/libshout3-dev/README
/usr/share/doc/libshout3-dev/NEWS.gz
/usr/share/doc/libshout3-dev/changelog.Debian.gz