there is no lookup command on the list of available commands on Splunk Light.
oh ok.. thanks.
splunk light does support lookups, you just have to configure them manually:
in ~etc/apps/search/lookups add your .csv file:
[mylookup] filename = mylookup.csv
It will also work if placed in app specific directories
Does Splunk Light still not support lookup tables? I'm looking to use an external source to correlate the IP addresses from my firewall logs to the DNS names of the matching computers. Is there another way to do this in Light?