Final answer:
The multikv command in Splunk uses the 'fields' option to extract specified fields from multi-line event data, while 'filter' is for filtering out specific fields.
Step-by-step explanation:
In Splunk, the multikv command facilitates the extraction of specified fields from multi-line event data. The 'fields' option is employed for this purpose, enabling users to precisely define which fields they want extracted from the complex data structures. This functionality is crucial for parsing and organizing relevant information within multiline events. On the other hand, if the objective is to exclude or filter out specific fields, the 'filter' option is utilized. By leveraging these options, Splunk users can effectively manage and extract meaningful insights from diverse and intricate log data, enhancing their ability to analyze and understand complex information structures.