systemd-detect-virt — Detect execution in a virtualized environment
systemd-detect-virt [OPTIONS...] 
systemd-detect-virt detects execution in a virtualized environment. It identifies the virtualization technology and can distinguish full VM virtualization from container virtualization.
When executed without --quiet
                will print a short identifier for the detected
                virtualization technology. The following technologies
                are currently identified: qemu,
                kvm, vmware,
                microsoft,
                oracle, xen,
                bochs, chroot,
                openvz, lxc,
                lxc-libvirt,
                systemd-nspawn.
If multiple virtualization solutions are used
                only the "innermost" is detected and identified. That
                means if both VM virtualization and container
                virtualization are used in conjunction only the latter
                will be identified (unless --vm is
                passed).
The following options are understood:
-h, --help¶Prints a short help text and exits.
--version¶Prints a short version string and exits.
-c, --container¶Only detects container virtualization (i.e. shared kernel virtualization).
-v, --vm¶Only detects VM virtualization (i.e. full hardware virtualization).
-q, --quiet¶Suppress output of the virtualization technology identifier.