Final answer:
Splunk offers two methods to perform regex: erex for automated regex generation and rex for manual specification of regular expressions.
Step-by-step explanation:
The two search time methods that Splunk provides to perform regex are erex and rex. The erex command generates regular expressions automatically based on examples you provide, which can be helpful for users who are less familiar with regex syntax. On the other hand, the rex command allows users to manually specify the regular expression to extract field data from events.