topic Re: Need help with a complicated field-extraction via regex in Splunk Search

Need help with a complicated field-extraction via regex

AnujaJadhav2 — Thu, 23 Nov 2017 18:55:09 GMT

want to extract a field in splunk however Splunk Regex won't work so I am writing my own Regex. However I am struggling to extract. Can someone please help?

My String:

Node ID=nbgcXYZdfdscxm2
Node ID=NBGDFDFCCXM2
Node ID=BURECXM2

Expected Output:

cXYZdfds
DFDFC
BURE

So far I was able to write this .*(?i)Node ID=^nbg

Re: Need help with a complicated field-extraction via regex

MuS — Thu, 23 Nov 2017 19:47:12 GMT

Hi AnujaJadhav2,

using regex101.com I ended up with this or regex:

 Node ID=(?i:(nbg))(.+)(?i:(cxm\d))|Node ID=(.+)(?i:(cxm\d))

the capturing group (.+) gives you the required results.

I'm sure this is not the best solution regex wise and some more clever guys haver better regexes, but it gives you something to start with 🙂

cheers, MuS

Re: Need help with a complicated field-extraction via regex

cpetterborg — Thu, 23 Nov 2017 19:49:05 GMT

This worked for me (validated using regex101.com):

(?i)Node ID=(nbg)?(?P<thing>\w+)cxm\d+

Re: Need help with a complicated field-extraction via regex

AnujaJadhav2 — Fri, 24 Nov 2017 09:13:09 GMT

This works very well in regex101 but it needs a capturing group for extraction. Nevertheless, thank you so much for your help.

Re: Need help with a complicated field-extraction via regex

AnujaJadhav2 — Fri, 24 Nov 2017 09:13:52 GMT

Just Perfect. Cannot imagine I wasted hours around this. Thank you so much.