topic Re: use regex to remove a number from a string in Splunk Search

use regex to remove a number from a string

matansocher — Tue, 29 Sep 2020 17:18:08 GMT

Hi,

I want to remove a number (up to 5 digits) from a string on its beginning.
an example:

43.aaaa_vvvvv.cccccc:dddddd => aaaa_vvvvv.cccccc:dddddd
9374.aaaa_vvvvv.cccccc:dddddd => aaaa_vvvvv.cccccc:dddddd
1.aaaa_vvvvv.cccccc:dddddd => aaaa_vvvvv.cccccc:dddddd

I only need to remove the first number and the "." after it.

thanks

Re: use regex to remove a number from a string

niketn — Mon, 18 Dec 2017 07:14:09 GMT

@matansocher, is this a field or raw data?
You can try the following rex command:

<your base search>
| rex field=_raw "\d+.(?<myData>.*)"
| table _raw myData

I have use field name as _raw but you can replace with your own if it is some other field. Alternatively you can also use replace() command with regular expression if this is a field.

Re: use regex to remove a number from a string

nikita_p — Mon, 18 Dec 2017 07:14:54 GMT

Hi matansocher,
Try the regex below. Let me know if this works.
index=xyz| rex field=_raw "^(?P[^.]+)"

Re: use regex to remove a number from a string

ryhluc01 — Fri, 25 Jan 2019 15:55:16 GMT

This produces this message:

"Error in 'rex' command: Encountered the following error while compiling the regex '^(?P[^.]+)': Regex: unrecognized character after (?P"