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Under GNU General Public License
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SYSTEMD-DETECT-VIRT(1) systemd-detect-virt SYSTEMD-DETECT-VIRT(1)
NAME
systemd-detect-virt - Detect execution in a virtualized environment
SYNOPSIS
systemd-detect-virt [OPTIONS...]
DESCRIPTION
systemd-detect-virt detects execution in a virtualized environment. It identifies the
virtualization technology and can distinguish full VM 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:
Table 1. Known virtualization technologies (both VM, i.e. full hardware virtualization,
and container, i.e. shared kernel virtualization)
+----------+----------------+--------------------------+
|Type | ID | Product |
+----------+----------------+--------------------------+
| | qemu | QEMU software |
| | | virtualization |
| +----------------+--------------------------+
| | kvm | Linux KVM kernel virtual |
| | | machine |
| +----------------+--------------------------+
| | zvm | s390 z/VM |
| +----------------+--------------------------+
| | vmware | VMware Workstation or |
| | | Server, and related |
| | | products |
| +----------------+--------------------------+
| | microsoft | Hyper-V, also known as |
|VM | | Viridian or Windows |
| | | Server Virtualization |
| +----------------+--------------------------+
| | oracle | Oracle VM VirtualBox |
| | | (historically marketed |
| | | by innotek and Sun |
| | | Microsystems) |
| +----------------+--------------------------+
| | xen | Xen hypervisor (only |
| | | domU, not dom0) |
| +----------------+--------------------------+
| | bochs | Bochs Emulator |
| +----------------+--------------------------+
| | uml | User-mode Linux |
+----------+----------------+--------------------------+
| | openvz | OpenVZ/Virtuozzo |
| +----------------+--------------------------+
| | lxc | Linux container |
| | | implementation by LXC |
| +----------------+--------------------------+
| | lxc-libvirt | Linux container |
| | | implementation by |
|container | | libvirt |
| +----------------+--------------------------+
| | systemd-nspawn | systemd's minimal |
| | | container |
| | | implementation, see |
| | | systemd-nspawn(1) |
| +----------------+--------------------------+
| | docker | Docker container manager |
+----------+----------------+--------------------------+
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).
OPTIONS
The following options are understood:
-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.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
EXIT STATUS
If a virtualization technology is detected, 0 is returned, a non-zero code otherwise.
SEE ALSO
systemd(1), systemd-nspawn(1)
systemd 219 SYSTEMD-DETECT-VIRT(1)
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On Apache/2.4.6 (CentOS)
Under GNU General Public License
2024-11-23 18:19 @127.0.0.1 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)