Here[1] is a better link to the "jails > FreeBSD" paper (aka, "Jails: Confining the omnipotent root"). I believe it initially shipped as part of FreeBSD 4.0 in

Here[1] is a better link to the "jails > FreeBSD" paper (aka, "Jails: Confining the omnipotent root"). I believe it initially shipped as part of FreeBSD 4.0 in March 2000. Wikipedia says[2] it was in use in the late 90s in a hosting provider before inclusion in FreeBSD though. Interesting! TIL. [1]: https://papers.freebsd.org/2000/phk-jails.files/sane2000-jail.pdf https://papers.freebsd.org/2000/phk-jails.files/sane2000-jai... [2]: https://en.wikipedia.org/wiki/FreeBSD_jail https://en.wikipedia.org/wiki/FreeBSD_jail