What is guest in linux

In Linux, "guest" usually refers to a guest operating system running in a virtualized environment. Virtualization is a technology that abstracts physical computing resources into multiple virtual environments, allowing the same physical host to Multiple independent operating system instances are running simultaneously on the host operating system. In a virtualized environment, the host operating system is called the "host", and other operating system instances running on the host operating system are called "guests".

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

In Linux, "guest" usually refers to the guest operating system (Guest Operating System) running in a virtualized environment.

Virtualization is a technology that abstracts physical computing resources into multiple virtual environments, allowing multiple independent operating system instances to run simultaneously on the same physical host. In a virtualized environment, the host operating system is called the "Host", and other operating system instances running on the host operating system are called "Guests".

In this case, "guest" refers to the guest operating system instance running in the virtualized environment. It can be a different operating system like Linux, Windows, BSD, etc., powered by virtualization software like VMware, VirtualBox, KVM, etc. Each guest operating system runs in its own virtual machine and is isolated from the host and other guest operating systems without affecting each other.

Through virtualization technology, multiple independent guest operating systems can be run on the same physical server, thereby achieving more efficient utilization of resources and more flexible deployment. Each guest operating system (guest) in a virtualized environment thinks that it is running in an independent environment and can independently install applications, manage file systems, and perform various tasks.

To summarize, in a virtualized environment in Linux, "guest" refers to an independent guest operating system instance running on the host operating system.

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