[writelog.ps1] Register event source, create event log, write messages to event log #powershell #.Net

writelog.ps1

# create Event log

using namespace System.Diagnostics

$log = New-Object -TypeName EventLog
$log.Source = 'PillowBook'
$template = $log.Source + ':  {0,10}:  Execute script:  {1}'

if ( -not $log::SourceExists($log.Source) ) 
{
	$log::CreateEventSource($log.Source, $log.Source)
}


$eventNames = 'Startup', 'Shutdown', 'Logon', 'Logoff'
$event = Get-Random 4

$log.WriteEntry( ($template -f $event, $eventNames[$event]), 'Information', $event, 666)


# eventvwr /c:PillowBook  or  run Event Viewer