Lookup
Lookup option tells you which feed does a given path belong to. This can be useful in several scenarios e.g. generally you would want to have a single definition for common feeds like metadata with same location otherwise it can result in a problem (different retention durations can result in surprises for one team) If you want to check if there are multiple definitions of same metadata then you can pick an instance of that and run through the lookup command like below.
Usage: $FALCON_HOME/bin/falcon entity -type feed -lookup -path /data/projects/my-hourly/2014/10/10/23/
If you have multiple feeds with location as /data/projects/my-hourly/${YEAR}/${MONTH}/${DAY}/${HOUR} then this command will return all of them.