Splunk Search

How do I capture the repeating pattern on multiple lines with REX?

clintla
Contributor

With this dataset, the linebreaker is zone:

 zone:  zone_1wwns
        00:00:00:00:00:00:00:01

 zone:  zone_2wwns
        00:00:00:00:00:00:00:02
        00:00:00:00:00:00:00:03

 zone:  zone_3wwns  
        00:00:00:00:00:00:00:04
        00:00:00:00:00:00:00:05
            00:00:00:00:00:00:00:06

When I use the regex:

| rex max_match=0 "zone:\s+(?\w+)((\s+(?\S\S\:\S\S\:\S\S\:\S\S\:\S\S\:\S\S\:\S\S\:\S\S))+)"

It captures the last wwn, when I remove the (+) at the end, then it captures the first wwn

When I do this search w/ Notepad++ it finds all wwns (my most used tool for testing rex). Seems like this should work.
Is there another way to capture these possible extra lines?

Tags (2)
0 Karma
1 Solution

somesoni2
Revered Legend

Give this a try (runanywhere sample, everything before rex command is to generate sample data)

| gentimes start=-1 | eval raw="zone: zone_1wwns
 00:00:00:00:00:00:00:01
##zone: zone_2wwns
 00:00:00:00:00:00:00:02
 00:00:00:00:00:00:00:03
##zone: zone_3wwns
 00:00:00:00:00:00:00:04
 00:00:00:00:00:00:00:05
 00:00:00:00:00:00:00:06" | table raw | makemv raw delim="##" | mvexpand raw 
| rex field=raw max_match=0 "zone:\s+(?<zone>\w+)[\r\n\s](?<ZoneVal>\s*((\d{2}\:)+\d+[\r\n\s]*)+)"

View solution in original post

0 Karma

clintla
Contributor

"This is close.. although it takes all the ZoneVal & lops them into the same field value. I need them to be different values.

after rethinking it, broke into 2 rex's.

| rex "zone:\s+(?\S+)"
| rex max_match=0 "(?\S\S:\S\S:\S\S:\S\S:\S\S:\S\S:\S\S:\S\S)"

That nailed it... although dang it! my first attempt should have worked! 🙂 "

0 Karma

somesoni2
Revered Legend

Give this a try (runanywhere sample, everything before rex command is to generate sample data)

| gentimes start=-1 | eval raw="zone: zone_1wwns
 00:00:00:00:00:00:00:01
##zone: zone_2wwns
 00:00:00:00:00:00:00:02
 00:00:00:00:00:00:00:03
##zone: zone_3wwns
 00:00:00:00:00:00:00:04
 00:00:00:00:00:00:00:05
 00:00:00:00:00:00:00:06" | table raw | makemv raw delim="##" | mvexpand raw 
| rex field=raw max_match=0 "zone:\s+(?<zone>\w+)[\r\n\s](?<ZoneVal>\s*((\d{2}\:)+\d+[\r\n\s]*)+)"
0 Karma

richgalloway
SplunkTrust
SplunkTrust

Notepad++ is great, but I believe it does not use a Perl-compatible regex engine (PCRE) like Splunk does. Most folks here use regex101.com to test their regular expressions.

---
If this reply helps you, Karma would be appreciated.
0 Karma
Get Updates on the Splunk Community!

.conf24 | Registration Open!

Hello, hello! I come bearing good news: Registration for .conf24 is now open!   conf is Splunk’s rad annual ...

ICYMI - Check out the latest releases of Splunk Edge Processor

Splunk is pleased to announce the latest enhancements to Splunk Edge Processor.  HEC Receiver authorization ...

Introducing the 2024 SplunkTrust!

Hello, Splunk Community! We are beyond thrilled to announce our newest group of SplunkTrust members!  The ...