How to download existing lookup file? and how to add new row and modify existing lookup file table?
If the new row you need to add will be composed by some search result you can use something like:
| inputlookup my_lookup.csv
| YOUR SEARCH HERE
| outputlookup my_lookup.csv append=true
There is also an app on Splunk Base that allows you to edit lookup files: https://splunkbase.splunk.com/app/1724/
Usually lookup files are stored on $SPLUNK_HOME/etc/system/lookups/ or $SPLUNK_HOME/etc/<app_name>/lookups/. From there you can also copy the files or edit them.
One other way you can use to download your lookup files is to use | inputlookup and then go to Export > CSV.
View solution in original post
How to update a lookup periodically?