Could the help doc be more detailed ?

[baiwfg2]

I found default host:port is localhost:8888, but by giving -h option, we can't see how to use the command paramter; second, I didn't get it by reading the sentence: You must have a path containing each host's files in a separate sub-directory, named according to the host. Because i installed collectd by source, and i don't have /etc/collectd directory, just /etc/collectd.conf