Param (
    [Parameter(Mandatory = $true)][String]$InputFile, #This is where the .csv file is stored
    [Parameter(Mandatory = $true)][String]$OutputFile #This is where the results file will appear.
)

#Variables
$ComputerName = Get-Content $InputFile -ErrorAction SilentlyContinue

###Enter Tasks Below as Remarks###

#Test if the input file exists.
if (Test-Path -path $InputFile) {

    #If the file exists continue.
    #Run the ForEach command, display each one and write to a file.
    Write-Host "-------------------------------------"
    Write-Host "-------------------------------------"
    Write-Host "-------------------------------------"
    foreach ($Computer in $ComputerName) {
        if (Test-Connection -ComputerName $Computer -Count 2 -Quiet) {
            Try {
                Write-Host -ForegroundColor Magenta "Scanning $Computer..."
                Invoke-Command -ComputerName $Computer -ScriptBlock {
                    Get-WmiObject Win32_Service | Where-Object { $_.Name -like '*CWGMonitor*' } } -ErrorAction SilentlyContinue | #This line can be amended to check for anything required.
                Select-Object PSComputerName |
                Tee-Object -FilePath $OutputFile -Append
            }
            Catch {
                Write-Warning "Unable to access service information from $Computer"
            }
        }
        else {
            Write-Warning "Unable to ping $Computer"
            #Display when the script is complete.
            Write-Host -ForegroundColor Yellow "The Script is complete, the file has been stored here: $Outputfile"
        }
        #If the file doesnt exist display a message and exit the script.
    }
}
else {
    Write-Host -ForegroundColor Red "Unable to locate file at location - $InputFile"
    Write-Host -ForegroundColor Red "Now ending script"
    Return
}