> probably the only alternative that was wildly available was chroot Opensource Linux-vserver https://en.wikipedia.org/wiki/Linux-VServer https://en.wikipedia.

> probably the only alternative that was wildly available was chroot Opensource Linux-vserver https://en.wikipedia.org/wiki/Linux-VServer https://en.wikipedia.org/wiki/Linux-VServer was available in 2001. At the same era commercial Virtuozzo was ubiquitous amount hosting providers.