find user agent in splunk query in javascript

To find the user agent in a Splunk query with Javascript, you can use regular expressions and the rex function.

Here is an example query:

index.tsx
index=weblogs | rex "User-Agent:\s(?P<useragent>.*?)$"
55 chars
2 lines

This query will search for the string "User-Agent:" in the weblogs index and extract the user agent string using a capturing group in the regular expression (?P<useragent>.*?). The rex function will create a new field called useragent with the extracted user agent string.

You can then use this field in further processing, such as filtering or aggregating results.