$ locate libgtk3-nocsd
/usr/lib/x86_64-linux-gnu/libgtk3-nocsd.so.0
/usr/share/doc/libgtk3-nocsd0
/usr/share/doc/libgtk3-nocsd0/changelog.Debian.gz
/usr/share/doc/libgtk3-nocsd0/copyright
/usr/share/lintian/overrides/libgtk3-nocsd0
/var/lib/dpkg/info/libgtk3-nocsd0:amd64.list
/var/lib/dpkg/info/libgtk3-nocsd0:amd64.md5sums
/var/lib/dpkg/info/libgtk3-nocsd0:amd64.shlibs
/var/lib/dpkg/info/libgtk3-nocsd0:amd64.symbols
/var/lib/dpkg/info/libgtk3-nocsd0:amd64.triggers