topic Manual Edit of reg expressions in Field Extractions page in Splunk Search

Manual Edit of reg expressions in Field Extractions page

lehrfeld — Mon, 10 Feb 2014 17:43:25 GMT

I have been working with extracting userIDs using RegExs and have run into some trouble. The following returns the correct results

| rex field=_raw "\,[abc]\w\w\w\w\w\w(?<userID>)" | stats count(userID)

This extracts user IDs from a csv file (that is our sourcetype)

When I go to the Fields Extraction page and edit the extraction manually, I don't get any results (actually, it returns none found)

I have tried editing the inline regex to read \,[abc]\w\w\w\w\w\w(?) but it is not returning anything. I can't seem to find any documentation about the nuances of this inline regex. Any tips would be great!

Thanks, Mike

Re: Manual Edit of reg expressions in Field Extractions page

martin_mueller — Mon, 10 Feb 2014 17:48:06 GMT

There may be some editing error, your userID capturing group cannot match anything because it's empty.

Re: Manual Edit of reg expressions in Field Extractions page

somesoni2 — Mon, 10 Feb 2014 17:53:15 GMT

Can you provide some sample entries?

Re: Manual Edit of reg expressions in Field Extractions page

lehrfeld — Mon, 10 Feb 2014 18:00:08 GMT

Thanks for the responses. I have a csv with information like email, userID, phone number, etc in it. A typical userID will be formatted like 'acb1234'. The issue that I am addressing is that the userID location between the various sourcetypes has changed over time. Meaning that in version one, the userID was in the second column, in version two, is has moved to the 8th column.

Sample entry would be
mike@email.com, abc1234, 555-555-1212, FName, LName ...
AND
21, mike@email.com, FName, LName, abc1234, 555-555-1212 etc..

Thank you! Mike

Re: Manual Edit of reg expressions in Field Extractions page

somesoni2 — Mon, 10 Feb 2014 18:39:27 GMT

Try this

   | rex  "(,\s)* (?P<userID>\w\w\w\d\d\d\d)(,\s)*"

assumming userId format is 3 alphabet and 4 digits. Update this if necessary.

Re: Manual Edit of reg expressions in Field Extractions page

lehrfeld — Mon, 10 Feb 2014 19:31:28 GMT

That is great! Thank you! Mike