How to verify log monitor output

[xtonymarsx]

I'm working on setting up log monitoring right now. I've got simple triggers setup to show when the shutterspeed of a remote controlled camera are set to 30 seconds by parsing the log specifically for 30 "{log[<path_to_log>,shutterspeed: ].str(*30*)}=1, and those are working just fine. I've had to set up individual triggers for different shutterspeeds. Ultimately, I want it to pull the shutterspeed value from the log file and trigger if it's anything other than 15. I've tried a couple different variations, but none have worked thus far. The value in the log appears as "shutterspeed: X"

{log[<path_to_log>,shutterspeed: ,,,,\1].last()}<>15 (this is the most recent one I tried. I thought \1 captures the value after the search string, but it's not.

So...
1. What is wrong with the item/trigger above?
2. Is there a way (like zabbix_agentd -t <item>) to test out log items on command line to verify the output is what I think it is going to be?

[kernbug]

Hello,

The value in the log appears as "shutterspeed: X"

You can use preprocessing for this, see examples here: Item value preprocessing
Also overall review of the preprocessing feature: https://www.zabbix.com/documentation.../preprocessing

[xtonymarsx]

Is there a way for me to see the output of my trigger via command line? For example, I can run...
"zabbix_agentd -t agent.ping" and of course I get a return of [u|1]

but...
"zabbix_agentd -t [log[<path>,shutterspeed: ,,,,\1]" returns "m|ZBX_NOTSUPPORTED"

I ask because how am I supposed to set up the preprocessing if I don't have confidence in what string is actually being gathered from the log?

[Atsushi]

There is no way to check the output result of log[] on the command line.

Please register items and output logs to check if values can be obtained.
There is also a method of creating a test file of the same format instead of an actual log file and adding an output example to that file and trying it.

Presenting a more concrete log file format and output example, you will receive more specific advice.
Detailed version of Zabbix being used is also important information.

[xtonymarsx]

Versions:
Server: v3.4.9
Agent: v2.2.7 (which I'd never checked before, and WOW we need to do an update)

Ok. Can I get a sanity check then? Below is the actual line from the my log file, and if I could get an example of how I SHOULD be parsing the "30" value would be a big help.

2018-07-06 09:33:47 DEBUG get_capture_settings(180) shutterspeed: 30

Is my original key even going to grab the "30" value? If not, can someone tell me what you think it is grabbing?

[Atsushi]

Please try with the item key as below.
log[<path_to_log>,"shutterspeed: ([0-9]+)",,,,\1]