Trying to delete a file with Powershell script ran by a service but issues with uac

Question

I'm having issues with a script that will delete a file on the C-Drive of a server. the script looks like this:
param(
[Parameter(Mandatory=$true)][string]$hostname
$StrFileName = "C:\Program Files\NSClient++\nsclient.log"
$LogLocal="c:\Nagios\naf_delete_nscp_log_file.log"
$Date = Get-Date -Format "yyyy-MM-dd hh:mm:ss"
"$date : NSClient logfile deletion requested on $hostname" | Out-File -filepath $LogLocal -Append
If (Test-Path "$strFileName"){
Remove-Item $strFileName -Force
$Date = Get-Date -Format "yyyy-MM-dd hh:mm:ss"
"$date : NSClient logfile deleted on $hostname" | Out-File -filepath $LogLocal -Append
The script is initiated from a Nagios quick action which will use nrpe to pass the host as parameter and make the nscp service, which runs as local system, run it. It works perfectly on servers that have no uac enabled, but I can't get it to work on servers
with uac. I've tried numerous options, but none seem to work. Any tips or advice to get this working with Powershell v2 code on servers with uac enabled is highly appreciated.
Thanks.
Willem

Answer 1

Hi Willem,
one thing to note: I don't see why your script itself has a hostname parameter.
One way around UAC has always been the Windows Task Scheduler. If you register a task as System run and triggered by an event, you can simply call the event locally (which doesn't require admin permissions) and it will perform the task.
I don't know how your Nagios construct works and the script by itself doesn't make much sense. If you want advice on how to do this without resorting to tasks, I'd need to know more about the system you are using.
Cheers,
Fred
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