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Return largest file name and size to sensor



I need to monitor a specific directory for the largest file of a few types (*.dbf, *.fpt, *.cdx) and return size and name to PRTG.

I have a PS script working to determine the file, but I'm not clear on how to return just the name and size to PRTG:

PS C:\Windows\system32> Get-ChildItem d:\apps\int\data\* -include ('*.dbf', '*.fpt','*.cdx') | Sort Length -desc | Select-Object -first 1

So - how do I grab name and size and return them to PRTG? Seems I need to write-host a JSON return string but I'm not sure how to get the size and name from what I have so far...

filename filesize powershell

Created on Mar 29, 2020 4:39:40 PM

1 Reply




The output of the script has to be as expected by PRTG. You can find the proper output syntax in your Webinterface under "Setup > PRTG API > Custom Sensors" or within our online manual: https://www.paessler.com/manuals/prtg/custom_sensor

An example for the normal "EXE/Script Sensor" would be: "value:message"

An example for the "EXE/Script Advanced" would be: "<prtg><result><channel>First channel</channel><value>10</value></result></prtg>"

This article may also be of interest for you: https://kb.paessler.com/en/topic/71356-guide-for-powershell-based-custom-sensors

Kind Regards,
Timo Dambach
Paessler Tech Support

Created on Mar 30, 2020 8:44:32 AM by  Timo Dambach [Paessler Support]

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