Splunk Search

Help in writing eval

mayank101
New Member

I have a string like ABC:BOOT3RDSUNMONTH_MAINT2_sadasdczxc1and I want to put the jobs which have boot in their string to be come under the event field and be named as Failed alert reboot. Also there are various entities under the event filed.Can anyone help here

Tags (1)
0 Karma

rbechtold
Communicator

Hey mayank101,

I have two solutions for you! Just replace "YOURFIELDHERE" with whatever the field name the string you're working with is in.

The first uses an eval statement to look through your field to find any part of the string that matches "boot". If it finds it, it will create a new value under the "NEWFIELD" that provides a log entry with the string "Failed Alert Reboot".

| eval NEWFIELD = if(lower(YOURFIELDHERE) LIKE "%boot%", "Failed Alert Reboot", null)

Alternitvely, you can use the "rex" command to search your data for the word boot. This will match any instance of "boot" it finds in the data, and returns "BOOT" as the field value for the newly created failed_alert_reboot field.

| rex field=YOURFIELDHERE "(?i)(?<failed_alert_reboot>boot)"

Let me know if these don't work for you or if you need help!

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!

Data Management Digest – August 2026

MichelleCorpora_1-1788182384472.png Welcome to the August 2026 edition of Data Management Digest! August was a ...

Your Feedback. Our Roadmap. Visit the PX Feedback Booth at .conf26

You use Splunk every day, come and help shape what's next.  Save Your Seat: Product-Focused Sessions at ...

Agentic SOC Triage: Investigating Splunk ES Notables with MCP Server and a Local LLM

The Problem: Too Many Alerts, Too Little Context Security operations teams running Splunk Enterprise Security ...