topic CLI - Regex with "?" in General Topics

CLI - Regex with "?"

TigeRRR — Thu, 07 Apr 2022 16:34:55 GMT

Hello all,

Does anybody know how to use a Regex that contains "?", obviously that doesn't work because that automatically triggers the helper?

For example, I'm trying to filter results for a certain CLI command using this:

| match (?s)(word1.*?)(?=word2|$)

You can see that it contains multiple question marks, I'm not sure what I can do to get those through (if at all possible) and Palo documentation doesn't help.

Re: CLI - Regex with "?"

S.Cantwell — Mon, 11 Apr 2022 00:26:09 GMT

The regular expression syntax in PAN-OS® is similar to traditional regular expression engines but every engine is unique. The following table describes the syntax supported in PAN-OS.

Pattern Rules Syntax

Description

.	Match any single character.
?	Match the preceding character or expression 0 or 1 time. You must include the general expression inside parentheses. Example: (abc)?

I see that you are not putting the parenthesis around correctly perhaps.. word1.*? should be (word1.*)? According the to docs.

Re: CLI - Regex with "?"

TigeRRR — Mon, 11 Apr 2022 14:45:48 GMT

Thanks, I did indeed try the suggested parenthesis thing before from the documentation but that didn't help, the "?" was still getting omitted.