How can I split a string for a field?

[tonifrommknecht]

How can I split a string from a field?
Example:
url="https://www.google.de/images/hpp/ic_wahlberg_product_core_48.png8.png"

--> url="https://www.google.de"

I have to extract the Website itself from the whole link every time...

[richgalloway · Accepted solution]

One way to do it is with rex.

... | rex field=url "(?P<website>https?:\/\/[^\/]+)\/" | ...