How to define a subroutine in PowerShell
There are no subroutines in PowerShell, you need a function:
function RemoveAllFilesByExtenstion
{
param(
[string]$TargetFolderPath,
[string]$ext
)
... code...
}
To invoke it :
RemoveAllFilesByExtenstion -TargetFolderPath C:\Logs -Ext *.log
If you don't the function to return any value make sure you capture any results returned from the commands inside the function.
Pretty simple to convert this to PowerShell:
function RemoveAllFilesByExtenstion([string]$targetFolderPath, [string]$ext)
{
...
}
But the invocation has to use space separated args but doesn't require quotes unless there's a PowerShell special character in the string:
RemoveAllFilesByExtenstion C:\Logs\ .log
OTOH, if the function is indicative of what you want to do, this can be done in PowerShell easily:
Get-ChildItem $targetFolderPath -r -filter $ext | Remove-Item