init

Strange thing happen.

0. Start your FreeBSD single-user.
1. Run /etc/netstart so your network is up.
2. Run /etc/rc.d/sshd start so you have sshd
3. Use ssh to login localhost, then su(1) to root
4. Type “init q”

Then init(8) would crash with signal 11. Yes, it was killed. As soon as kernel found this, it would panic with “Going nowhere without my init!”.

Dag-Erling Smørgrav has posted a discussion on FreeBSD-arch (I have to use a outside link instead of FreeBSD’s own mailing list archive, because it didn’t updated from 2004-01-26 for unknown reason), accroding to this post, we see a need of running init(8) in jails, which allows us to terminate a jail cleanly.