What is a lookup command? Differentiate between inputlookup & outputlookup commands.
Answer / Akhil Jain
A lookup command in Splunk allows you to search for specific values within external files, which can then be used in your main search. Lookup commands enable you to enrich your data by adding additional context or details.
1. inputlookup: The 'inputlookup' command reads an external file line-by-line and stores the results in memory for later use in your search.
2. outputlookup: The 'outputlookup' command takes a dataset from your search and writes it to an external file that can be used as input for other searches (e.g., in subsequent 'inputlookup' commands).
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