Which command is used to validate a lookup file?

The command used to validate a lookup file in Splunk is by utilizing the | inputlookup command. When you use this command followed by the name of the lookup file, it retrieves the data from that file and displays it in the search results. This allows you to not only view the content of the lookup file but also check if the file is accessible and properly formatted.

Validation primarily involves confirming that the lookup file can be read and that the data is structured correctly for use in searches and lookups. Since the inputlookup command is specifically intended for retrieving and validating lookup data directly, it is the most appropriate choice for this task.

Other commands presented would not serve the purpose of validating a lookup file effectively. For instance, simply stating lookup products.csv does not invoke a valid command structure, and while the lookup_definition command pertains to lookup definitions, it does not retrieve or validate the actual data within the file. Thus, using the | inputlookup command is the best practice for confirming that a lookup file is available and contains the expected data.