sbin/rotorouter
@unexec if cmp -s %D/etc/rotorouter.conf %D/etc/rotorouter.conf-example ; then rm -f %D/etc/rotorouter.conf; fi
etc/rotorouter.conf-example
@exec if [ ! -f %D/etc/rotorouter.conf ]; then cp -p %D/%F %B/rotorouter.conf; fi