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