Q:

How to restore accidentaly removed file of FreeBSD base system?

I accidentally removed /etc/rc.d/rtadvd from my FreeBSD system (8.2-RELEASE)
What is the best way of getting such system file restored?

A:

A small further investigation learned that the base versions are stored in the kernel source in /usr/src/etc. 
So a cp /usr/src/etc/rc.d/rtadvd /etc/rc.d/rtadvd solved my problems.

