Did not document (other than the assembly script that I can&#x27;t share), although I did post my jail.conf (essentially) in an earlier FreeBSD thread <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10602990" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10602990</a><p>If you know how to build a minimal chroot, you know how to build a minimal jail, and then you just need to configure it, etc... If you don&#x27;t know how to build a minimal chroot, check out option 3 &#x27;most minimal chroot possible&#x27; here: <a href="http:&#x2F;&#x2F;ram.kossboss.com&#x2F;debian-ubuntu-build-minimal-chroot&#x2F;" rel="nofollow">http:&#x2F;&#x2F;ram.kossboss.com&#x2F;debian-ubuntu-build-minimal-chroot&#x2F;</a><p>It&#x27;s written against Debian Linux, but the same thing basically works for FreeBSD, except ldd on FreeBSD omits the loader (&#x2F;libexec&#x2F;ld-elf.so.1), but I sort of remembered that from somewhere, and I used truss to see what system calls were being used before it died.