Splunk Search

How to escape the end bracket using rex?

rbdev
Engager

I've read the threads on escaping the parens and the such. But I'm trying to do the "]". I thought I would be able to just swap the ")" for "]" in the rex command but it doesn't work.

Line: ....[Status: 4] [myfield2: myvalue2][myfield3:myvalue3] [myfield4:myvalue4]

So I've tried the following to extract field2 as value2. The closest one I get is the first and second one. I get the field to extract, but it doesn't cut off on the "]" after it (so the values look like: myvalue2][myfield3:myvalue3] [myfield4:myvalue4])

rex field=_raw "myfield2: (?<myextractvalue2>.*)\\]"

rex field=_raw "myfield2: (?<myextractvalue2>.*)\]"

rex field=_raw "myfield2: (?<myextractvalue2>\w)\\]"

Any help would be greatly appreciated. Thanks.

0 Karma
1 Solution

cpetterborg
SplunkTrust
SplunkTrust

Try:

rex field=_raw "myfield2:\s*(?<myextractvalue2>[^\]]*)"

or

rex field=_raw "myfield2:\s*(?<myextractvalue2>.*?)\]"

View solution in original post

poete
Builder

Hello,

this should do :

| makeresults 
| eval someField="[Status: 4] [myfield2: myvalue2][myfield3:myvalue3] [myfield4:myvalue4]"
| rex field=someField "myfield2: (?<myextractvalue2>[A-Za-z0-9]+)" 
| rex field=someField "myfield3:(?<myextractvalue3>[A-Za-z0-9]+)"
| rex field=someField "myfield4:(?<myextractvalue4>[A-Za-z0-9]+)"
0 Karma

cpetterborg
SplunkTrust
SplunkTrust

Try:

rex field=_raw "myfield2:\s*(?<myextractvalue2>[^\]]*)"

or

rex field=_raw "myfield2:\s*(?<myextractvalue2>.*?)\]"

rbdev
Engager

EXCELLENT!! Thank you! The second actually worked better for me. The first one sometimes cut the value for some reason. But the second one perfect!

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Persistent Queue at TcpOut — One of Splunk's Most Practical Features

Splunk introduced persistent queueing at the tcpout layer as one of the most practical resilience features in ...

Skip the Awkward Silence: Have a .conf-ersation at .conf26

Picture this. You arrive at .conf26 already having your socializing and networking plans mapped out. No ...

Rethinking Zero Trust: From Product Purchases to Logical Control Evidence

Implementing Zero Trust (ZT) across complex environments often falters at the very beginning due to a ...