topic Re: Rex need to extract field till first occurrence of /r in Splunk Search

Rex need to extract field till first occurrence of /r

Sangu — Thu, 20 May 2021 11:21:28 GMT

I need to extract hostname or IP address from raw log.

My log looks like below:

somerandometest host: abc@email.com \r\n someothertext

I wrote rex as "Host:.(?<Host>.*?)(\\r)"

this works great in regex site, but when I put it in splunk search it does not work. Please let me know if anything need to be updated. I'm extracting text between host to till \r.

here extracted field can be hostname or IP address hence taking till "\r"

Thanks in advance!

Re: Rex need to extract field till first occurrence of /r

ITWhisperer — Thu, 20 May 2021 11:46:09 GMT

Try three backslashes as splunk seems to need more than regex101

Re: Rex need to extract field till first occurrence of /r

Sangu — Thu, 20 May 2021 11:56:28 GMT

Thanks for the help, It worked 🙂