Is the replace function in splunk regex or regex?

SplunkTrust. 07-23-2017 05:17 AM. The replace function actually is regex. From the most excellent docs on replace: replace (X,Y,Z) - This function returns a string formed by substituting string Z for every occurrence of regex string Y in string X.
Keeping this in consideration, what is the purpose of regex in Splunk?
Regex in Splunk SPL “A regular expression is an object that describes a pattern of characters. Regular expressions are used to perform pattern- matching and ‘search-and-replace’ functions on text. –w3schools.com
In respect to this, is the replace function in regex actually regex? The replace function actually is regex. From the most excellent docs on replace: replace (X,Y,Z) - This function returns a string formed by substituting string Z for every occurrence of regex string Y in string X. The third argument Z can also reference groups that are matched in the regex.
In addition, how does the Rex function work in Splunk?
Extract or rename fields using regular expression named capture groups, or edit fields using a sed expression. The rex function matches the value of the specified field against the unanchored regular expression and extracts the named groups into fields of the corresponding names.
Consequently, what do you need to know about regex in Java?
Description: The Java regular expression (regex) or sed expression that defines the information to match and extract from the specified field. You must include a named capturing group in a regular expression pattern surrounded by forward slashes ( / ).

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