Splunk Search

Need to write both rex and regex

vishwanadhan_mu
Explorer

"C:\Users\TestUser\AppData\Local\Microsoft\Teams\Update.exe" --processStart "Teams.exe" --process-start-args "--system-initiated"

Could someone help me writing regex and rex to extract field(which is a process) name after --processStart .

Next I'll filter out filed name which I don't want match.

Thanks in Advance

Tags (2)
0 Karma
1 Solution

vnravikumar
Champion

Hi

Try this

| makeresults 
| eval temp="\"C:\Users\TestUser\AppData\Local\Microsoft\Teams\Update.exe\" --processStart \"Teams.exe\" --process-start-args \"--system-initiated\"" 
| rex field=temp "--processStart\s\"(?P<processname>[^--]+)\""

View solution in original post

jawaharas
Motivator

Try this.

Field extracted using space as delimiter.

| makeresults 
 | eval input="\"C:\Users\TestUser\AppData\Local\Microsoft\Teams\Update.exe\" --processStart \"Teams.exe\" --process-start-args \"--system-initiated\"" 
 | rex field=input "^(?:[^\s]* ){2}\"(?<process>[^ ]+)\""

vishwanadhan_mu
Explorer

This too worked for me. Thanks a lot.

0 Karma

vnravikumar
Champion

Hi

Try this

| makeresults 
| eval temp="\"C:\Users\TestUser\AppData\Local\Microsoft\Teams\Update.exe\" --processStart \"Teams.exe\" --process-start-args \"--system-initiated\"" 
| rex field=temp "--processStart\s\"(?P<processname>[^--]+)\""

vishwanadhan_mu
Explorer

This worked. Thanks a lot

0 Karma

vishwanadhan_mu
Explorer

If you don't mind can you explain me [^--]+)\"" this part

0 Karma

vnravikumar
Champion

I mentioned to extract from processStart to before --

Get Updates on the Splunk Community!

Index This | What is broken 80% of the time by February?

December 2025 Edition   Hayyy Splunk Education Enthusiasts and the Eternally Curious!    We’re back with this ...

Unlock Faster Time-to-Value on Edge and Ingest Processor with New SPL2 Pipeline ...

Hello Splunk Community,   We're thrilled to share an exciting update that will help you manage your data more ...

Splunk MCP & Agentic AI: Machine Data Without Limits

Discover how the Splunk Model Context Protocol (MCP) Server can revolutionize the way your organization uses ...