Splunk Search

How to fetch values from a string using rex command

Puvi
New Member

Hi,

i have a field with values like AB101, I want to extract 101 separately into a new field

Tags (2)
0 Karma

vnravikumar
Champion

Hi

Try this

| makeresults 
| eval temp="AB101" 
| rex field=temp "(?P<result>[\d]+)"
0 Karma

kartm2020
Communicator

Try this.
It will fetch the number followed by digits.
| rex field=field_name "A-Z"

If you have non-capital words. try the below

| rex field=field_name "[A-Z]a-z"

0 Karma

renjith_nair
Legend

@Puvi,

Try

|rex field=field_name "(?<digits>\d+)"

where field_name is your field and digits is the new field

---
What goes around comes around. If it helps, hit it with Karma 🙂
0 Karma

renjith_nair
Legend

@Puvi , please accept one of the answers which helped you or let's know if you need further help

---
What goes around comes around. If it helps, hit it with Karma 🙂
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!

Make Your Machine Data AI-Ready in Splunk

Every team is getting ready for AI agents.   Thursday, November 12, 2026  |  11AM  PST / 2PM EST   ...

Splunk Asynchronous Forwarding Explained

Splunk asynchronous forwarding is often misunderstood as simply setting autoLBVolume. That is not quite right. ...

How to Monitor AI Agents with Splunk Agent Observability

Let’s say I’m running a travel planning AI app in production. A user asks for three concise hotel options in ...