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{{More citations needed|date=November 2020}}
'''OS-level virtualization''' is an [[operating system]] (OS) [[virtualization]] paradigm in which the [[Kernel (operating system)|kernel]] allows the existence of multiple isolated [[user space and kernel space|user space]] instances,
On [[Unix-like]] operating systems, this feature can be seen as an advanced implementation of the standard [[chroot]] mechanism, which changes the apparent root folder for the current running process and its children. In addition to isolation mechanisms, the kernel often provides [[Resource management (computing)|resource-management]] features to limit the impact of one container's activities on other containers. Linux containers are all based on the virtualization, isolation, and resource management mechanisms provided by the [[Linux kernel]], notably [[Linux namespaces]] and [[cgroups]].<ref>{{cite web|url=http://www.netdevconf.org/1.1/proceedings/slides/rosen-namespaces-cgroups-lxc.pdf|title=Namespaces and Cgroups, the basis of Linux Containers|first=Rosen|last=Rami|access-date=18 August 2016}}</ref>
== Operation ==
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