Virt-inspector

Command line utility that can examine a virtual machine or disk to determine the version of its operating system and other information. It can produce XML output.

 virt-inspector centos-7.2.img

See also

• libguestfs-tools: virt-sysprep, virt-clone, virt-builder, virt-customize, virt-resize, virt-rescue, virt-sparsify, guestmount, guestfish, virt-inspector, virt-cat, virt-log, virt-df, virt-ls, virt-filesystems, virt-list-filesystems, virt-edit

https://kb.novaordis.com/index.php/Virt-inspector