To augment the built-in commands, Splunk provides the ability to write commands in Python and Perl. You can write the commands to modify events, replace events, or even dynamically produce events.
When not to write a command
While external commands can be very useful, if the number of events to be processed is large, or if performance is a concern, it should be considered a last resort. You should make every effort to accomplish the task at hand using the search language built into Splunk, or other built-in features. For instance, if you need:
- Regular expressions—learn to use
regex, and extracted fields
- To calculate a new field, or modify an existing field—look into
splunk eval functionswith your favorite search ...