#Demo-DebugLog.ps1

 Function Write-DebugMessage {
        Param([string]$text)
        
        #set to Continue to turn on debug messages
        $debugpreference="continue"

        # build a text string of information that can be passed
        # to the Debug pipeline
        
        #here are some variables you might want to work with
        $computer=$env:computername
        $domain=$env:userdomain
        $user=$env:username
        
        #return a timestamp value with milliseconds
        #like 08/06/2008 11:08:37:4361
        #Or you can use an expression like this
        #(Get-Date -Format g).toString()
        $timestamp=get-date -f 'MM/dd/yyyy HH:mm:ss:ffff'
        
        $line=$($myinvocation.scriptlinenumber)
        $script=$($myinvocation.invocationname)
        
        [string]$msg="[{0}:{1}\{2}] {3} Line:{4} {5}" -f $computer,$domain,$user,$timestamp,$line,$text
        
        Write-Debug $msg
    
    }
    
function Foo-Me {
    
    Write-DebugMessage "in function $($myinvocation.invocationname)"
    Write-DebugMessage "getting services"
    Get-Service
    Write-DebugMessage "exiting function"
}

#setting this to $TRUE doesn't do any good if the debug pipeline is 
#turned off    
$debuglog=$TRUE

if ($debuglog) {
    #define a temporary name for the transcript file
    $transcriptName="{0}_transcript.txt" -f $myinvocation.mycommand.name
    $transcript=(Join-Path "C:\" $transcriptName ) 
    Start-Transcript $transcript | Out-Null

}

Write-DebugMessage "starting $($myinvocation.invocationname)"

sleep 3

Write-DebugMessage "Getting Date"
Get-Date

Write-DebugMessage "Getting powershell process"
Get-Process powershell

Write-DebugMessage "Calling Foo-Me"
Foo-Me

Write-DebugMessage "Getting WMI Information"
$d=Get-WmiObject win32_logicaldisk -filter "deviceid='c:'"

Write-DebugMessage ("Drive C size is {0}GB" -f ([int]($d.Size/1GB)))

$a=@(1,2,3,4,5)
Write-DebugMessage $a

Write-DebugMessage "finished"

if ($debuglog) {
    $filename="{0}_debug.txt" -f $myinvocation.mycommand.name
    $debuglogfile=(Join-Path "c:\" $filename)
    
    Stop-Transcript | Out-Null
    
    Get-Content $transcript | Select-String -Pattern "DEBUG:" | Out-File $debuglogfile
    
    notepad $debuglogfile
    
    $rc=Read-Host "Do you want to delete $transcript [YN]?"
    if ($rc -match "y") {
        Remove-Item $transcript
    }

}