Question

I have a powershell script that needs to read from a config file with a simple Get-Content cmdlet:

 foreach ($s in Get-Content $config_file)

If the config file is not where it is supposed to be I want to stop the script and log the error.

Is it possible to use the -ErrorAction with a cusom logging function with in the script?

foreach($s in Get-Content $config_file -ErrorAction mdie('Could not find config file')

mdie is a logging function that logs the error and exits the script.

Or is there a better way?

-G

Answer 1

Use -ErrorAction Stop and try..catch pattern. In the catch block an error object is represented by the variable $_.

function LogErrorAndExit([string]$message) {
    Write-Host $message -ForegroundColor Red
    exit 1
}

try {
    foreach($s in Get-Content $config_file -ErrorAction Stop) {
        # normal code
        # ...
    }
}
catch {
    # error case code
    LogErrorAndExit $_
}

# normal code
# ...