用于确定Ubuntu是否在虚拟机中运行的命令？
是否有一个命令或工具可用于确定Ubuntu是否作为VirtualBox或Qemu等虚拟化程序中的guest虚拟机运行，或者它是否在裸机上运行？
VIRT-什么 
是一个shell脚本，可用于检测程序是否在虚拟机中运行。
该程序打印出一个关于虚拟机的“事实”列表，该列表源自启发式算法。 每行打印一个事实。
如果没有打印任何内容并且脚本以代码0（无错误）退出，那么它可能意味着程序在裸机上运行， 或者程序在一种我们不知道或不能知道的虚拟机内运行检测。
摘要
sudo virt-what [facts] FACTS
aws Amazon Web Services cloud guest. Status: contributed by Qi Guo. bhyve This is a bhyve (FreeBSD hypervisor) guest. Status: contributed by Leonardo Brondani Schenkel. docker This is a Docker container. Status: confirmed by Charles Nguyen hyperv This is Microsoft Hyper-V hypervisor. Status: confirmed by RWMJ ibm_power-kvm This is an IBM POWER KVM guest. Status: contributed by Adrian Likins. ibm_power-lpar_shared ibm_power-lpar_dedicated This is an IBM POWER LPAR (hardware partition) in either shared or dedicated mode. Status: contributed by Adrian Likins. ibm_systemz This is an IBM SystemZ (or other S/390) hardware partitioning system. Additional facts listed below may also be printed. ibm_systemz-direct This is Linux running directly on a IBM SystemZ hardware partitioning system. This is expected to be a highly unusual configuration - if you see this result you should treat it with suspicion. Status: not confirmed ibm_systemz-lpar This is Linux running directly on an LPAR on an IBM SystemZ hardware partitioning system. Status: confirmed by Thomas Huth ibm_systemz-zvm This is az/VM guest running in an LPAR on an IBM SystemZ hardware partitioning system. Status: confirmed by RWMJ using a Fedora guest running in z/VM ibm_systemz-kvm This is a KVM guest running on an IBM System Z hardware system. Status: contributed by Thomas Huth ldoms The guest appears to be running on an Linux SPARC system with Oracle VM Server for SPARC (Logical Domains) support. Status: contributed by Darren Kenny ldoms-control The is the Oracle VM Server for SPARC (Logical Domains) control domain. Status: contributed by Darren Kenny ldoms-guest The is the Oracle VM Server for SPARC (Logical Domains) guest domain. Status: contributed by Darren Kenny ldoms-io The is the Oracle VM Server for SPARC (Logical Domains) I/O domain. Status: contributed by Darren Kenny ldoms-root The is the Oracle VM Server for SPARC (Logical Domains) Root domain. Status: contributed by Darren Kenny linux_vserver This is printed for backwards compatibility with older virt-what which could not distinguish between a Linux VServer container guest and host. linux_vserver-guest This process is running in a Linux VServer container. Status: contributed by Barış Metin linux_vserver-host This process is running as the Linux VServer host (VxID 0). Status: contributed by Barış Metin and Elan Ruusamäe lxc This process is running in a Linux LXC container. Status: contributed by Marc Fournier kvm This guest is running on the KVM hypervisor using hardware acceleration. Note that if the hypervisor is using software acceleration you should *not* see this, but should see the "qemu" fact instead. Status: confirmed by RWMJ. lkvm This guest is running on the KVM hypervisor using hardware acceleration, and the userspace component of the hypervisor is lkvm (aka kvmtool). Status: contributed by Andrew Jones openvz The guest appears to be running inside an OpenVZ or Virtuozzo container. Status: contributed by Evgeniy Sokolov ovirt The guest is running on an oVirt node. (See also "rhev" below). Status: contributed by RWMJ, not confirmed parallels The guest is running inside Parallels Virtual Platform (Parallels Desktop, Parallels Server). Status: contributed by Justin Clift powervm_lx86 The guest is running inside IBM PowerVM Lx86 Linux/x86 emulator. Status: data originally supplied by Jeffrey Scheel, confirmed by Yufang Zhang and RWMJ qemu This is QEMU hypervisor using software emulation. Note that for KVM (hardware accelerated) guests you should *not* see this. Status: confirmed by RWMJ. rhev The guest is running on a Red Hat Enterprise Virtualization (RHEV) node. Status: confirmed by RWMJ uml This is a User-Mode Linux (UML) guest. Status: contributed by Laurent Léonard virt Some sort of virtualization appears to be present, but we are not sure what it is. In some very rare corner cases where we know that virtualization is hard to detect, we will try a timing attack to see if certain machine instructions are running much more slowly than they should be, which would indicate virtualization. In this case, the generic fact "virt" is printed. virtage This is Hitachi Virtualization Manager (HVM) Virtage hardware partitioning system. Status: data supplied by Bhavna Sarathy, not confirmed virtualbox This is a VirtualBox guest. Status: contributed by Laurent Léonard virtualpc The guest appears to be running on Microsoft VirtualPC. Status: not confirmed vmm This is a vmm (OpenBSD hypervisor) guest. Status: contributed by Jasper Lievisse Adriaanse. vmware The guest appears to be running on VMware hypervisor. Status: confirmed by RWMJ xen The guest appears to be running on Xen hypervisor. Status: confirmed by RWMJ xen-dom0 This is the Xen dom0 (privileged domain). Status: confirmed by RWMJ xen-domU This is a Xen domU (paravirtualized guest domain). Status: confirmed by RWMJ xen-hvm This is a Xen guest fully virtualized (HVM). Status: confirmed by RWMJ
对不起，这是你的GUY ….;）
运行lspci并检查字符串’VirtualBox’。
你可以运行lspci | grep VirtualBox lspci | grep VirtualBox
您也可以运行lsusb并检查字符串’VirtualBox’。 如lsusb | grep VirtualBox lsusb | grep VirtualBox
也是dmesg工作，运行dmesg | grep VirtualBox dmesg | grep VirtualBox或dmesg | grep virtual dmesg | grep virtual
imvirt （默认情况下未安装但在Universe存储库中可用）