topic Re: Pipe a command and using match regular expressions in General Topics

Pipe a command and using match regular expressions

epacke — Tue, 20 Feb 2018 05:00:11 GMT

Dear experts!

I'm trying to compile a match which matches the following regexp: (debug|monitor).(global|level|pcap|detail\.enable) but it seems like it does not support capturing groups. I've searched for a manual for the match command but struck out.

The end game here is to use it to filter show system state to capture lines containing:

debug.global
debug.level
debug.pcap
monitor.detail.enable

Looks like capture lists is supported, ie. show system state | match debug.[glp] but capturing groups is what I need.

Does anyone here have a solution or tip?

Kind regards,

Patrik

Re: Pipe a command and using match regular expressions

gwesson — Wed, 21 Feb 2018 00:15:20 GMT

Looks like you were already pretty close, you needed to escape the pipe. This seems to work for me:

show system state | match debug.[glp]\|monitor.detail.enable

More broadly, you could probably use although it gets a bit unwieldy after enough entries.

show system state | match debug.g\|debug.l\|debug.p\|monitor.detail.e

Good luck!

Greg

Re: Pipe a command and using match regular expressions

epacke — Wed, 21 Feb 2018 01:05:20 GMT

Thank you so much Greg.

They really need to improve their documentation in this part. And I need to improve my brain.

Can't believe I did not try that. 🙂

/Patrik

Re: Pipe a command and using match regular expressions

bspilde — Wed, 21 Feb 2018 03:25:25 GMT

Thanks Greg! Huge help for us.

Re: Pipe a command and using match regular expressions

H.Tendrup — Tue, 24 Dec 2024 15:31:34 GMT

This is great, backwards, but great (one should escape control characters if they want to include them in the match, not the other way 'round). Thank you!