Extract data from one field ot another using Regex

PTC_ — Thu, 02 Mar 2023 12:09:44 GMT

Hello,
(I will use fictional data to give examples)

I'm trying to use regex to extract data from one field to another, but Splunk doesn't find the data I want in this specific field.

The field I want to extract data (let's call it DATA_FIELD) looks something like:
SMBv2 guid=111111-b111-1111-1111-11111aaaa11 time=2023-02-27 15:17:35 domain=DOMAINNAME version=12.1.11111 ntlm-ver=15 domain=DOMAINNAME name=HOSTNAME domain-dns=DOMAINDNS name-dns=NAMEDNS

I want to extract "name=HOSTNAME" from this field to another one (HOSTNAME_FIELD)
I suspect my Regex parameters are not working with Splunk, even though I tested them all in regex101 .
Example:
| rex field=DATA_FIELD "HOSTNAME_FIELD: name=(?<name>\S*(?))\s"

I tried many forms of regex, such as:
name.(?<=[=])\S*(?:\s)?
.name=(?<=[=])\S*(?)
name=(?<name>\S*(?))\s

None of them worked in Splunk but they work in regex101.

Is this problem on the regex formula itself on Splunk? Or is it problem with the sintax?
What's the best way to extract this data?

Re: Extract data from one field ot another using Regex

ITWhisperer — Thu, 02 Mar 2023 12:14:31 GMT

| rex field=DATA_FIELD "name=(?<HOSTNAME_FIELD>\S*?)\s"

topic Re: Extract data from one field ot another using Regex in Splunk Search

Extract data from one field ot another using Regex

Re: Extract data from one field ot another using Regex