fluent/fluentd — pull request #23 by parolkar (2011-11-30 14:14:47+00:00)
Title: Option to supply inline config on commandline. This bring some dynamic-ness to config

This is very useful if you want to hook fluentd directly on heroku dyno (or any Foreman managed system)

Imagine running something like this

ruby bin/fluentd -c etc/fluent.conf -i "\n type http\n port $PORT\n "

This immensely helps when port numbers are not known before hand.