systemd Developer Lennart Poettering lennart@poettering.net systemd-detect-virt 1 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 machine virtualization from container virtualization. systemd-detect-virt exits with a return value of 0 (success) if a virtualization technology is detected, and non-zero (error) otherwise. By default, any type of virtualization is detected, and the options --container and --vm can be used to limit what types of virtualization are detected. When executed without --quiet will print a short identifier for the detected virtualization technology. The following technologies are currently identified: Type ID Product VM qemu QEMU software virtualization, without KVM kvm Linux KVM kernel virtual machine, with whatever software, except Oracle Virtualbox zvm s390 z/VM vmware VMware Workstation or Server, and related products microsoft Hyper-V, also known as Viridian or Windows Server Virtualization oracle Oracle VM VirtualBox (historically marketed by innotek and Sun Microsystems), for legacy and KVM hypervisor xen Xen hypervisor (only domU, not dom0) bochs Bochs Emulator uml User-mode Linux parallels Parallels Desktop, Parallels Server bhyve bhyve, FreeBSD hypervisor qnx QNX hypervisor Container openvz OpenVZ/Virtuozzo lxc Linux container implementation by LXC lxc-libvirt Linux container implementation by libvirt systemd-nspawn systemd's minimal container implementation, see systemd-nspawn1 docker Docker container manager rkt rkt app container runtime If multiple virtualization solutions are used, only the "innermost" is detected and identified. That means if both machine and container virtualization are used in conjunction, only the latter will be identified (unless --vm is passed). The following options are understood: -c --container Only detects container virtualization (i.e. shared kernel virtualization). -v --vm Only detects hardware virtualization). -r --chroot Detect whether invoked in a chroot2 environment. In this mode, no output is written, but the return value indicates whether the process was invoked in a chroot() environment or not. --private-users Detect whether invoked in a user namespace. In this mode, no output is written, but the return value indicates whether the process was invoked inside of a user namespace or not. See user_namespaces7 for more information. -q --quiet Suppress output of the virtualization technology identifier. If a virtualization technology is detected, 0 is returned, a non-zero code otherwise. systemd1, systemd-nspawn1, chroot2, namespaces7