~$ dpkg -S gdbsx xen-utils-4.7: /usr/lib/xen-4.7/bin/gdbsx ~$ dpkg -l|grep xen-utils-4.7 ii xen-utils-4.7 4.7.2-0ubuntu1 amd64 XEN administrative tools
~$ dpkg -S gdbsx xen-4.7/ bin/gdbsx
xen-utils-4.7: /usr/lib/
~$ dpkg -l|grep xen-utils-4.7
ii xen-utils-4.7 4.7.2-0ubuntu1 amd64 XEN administrative tools