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