Looking at it again, I assume the process must be owned and hence the directory /run/radiusd owned by radiusd.radiusd, however, no change of ownership is made and so it remains owned as root... eth7:/etc # ps auxwk start_time | grep radiu[s] root 32652 0.0 0.1 167580 6896 ? Ssl 21:47 0:00 /usr/sbin/radiusd -d /etc/raddb