How would i deal with variables within Functions that I would like to Split-Job?

Here is a snip of my script:

Import-Module -Name .\_Modules\Split-Job.psm1

Function GetSystemState
{ # Begin Function GetSystemState()
# Pings each of the system names found to check if online
# Writes findings to a files.
$intCounter++
Write-Host "["$intCounter"/"$intCounterMax]" Checking Computer: " $_ -BackgroundColor Cyan -ForegroundColor White
If (Test-Connection -ComputerName $_ -Quiet -Count 1)
{ # If Computer is alive
# Adds Computer Name to Alive File
$strAliveList += $_
} # End of True Test-Connection
Else # Test-Connection
{ # Begin of Else for Test-Connection
$strDeadList += $_
} # End of Else for Test-Connection
} # End Function GetSystemState()

# Function Variables
$GLOBAL:strAliveList = @()
$GLOBAL:strDeadList = @()

# Get Computer Status
# Determines if Computer is On-Line
Write-Host "Getting Computer Status……………………………………………." -BackgroundColor Black -ForegroundColor White
$GLOBAL:intCounter = 0
$GLOBAL:intCounterMax = $computerList.Length
$computerList | Split-Job { % {GetSystemState}} -Function GetSystemState

It does not update my Alive or Dead Variables nor does it increment my counter. I also have split-job running another part of my script where it searches the alive computers and put information inside variables as well with the same result of not passing back to main script.

Any and all help would be greatly appreciated!!! I fairly new to powerschell and all self-taugh with google search help. That's were I came accross your script. I am running v1.2

Here's a quick way to get what you seem to be looking for.

'computer1', 'computer2', 'computer3' | Split-Job { % { GWMI Win32_OperatingSystem -ComputerName $_ -Property CSName, LocalDateTime, LastBootUpTime }} | Select @{n='ComputerName';e={ $_.CSName}}, @{n='UpTime';e={ [datetime]$_.LocalDateTime – [datetime]$_.LastBootUpTime}}

http://poshcode.org/2621

Thanks,

Stephen

I just found your site by chance looking for help trying to multi-thread a powershell script. I am still rather unfamiliary with powershell syntax and need a quick fix. Here is my code below:

##
# Start of script
##

# Helper Function – convert WMI date to TimeDate object
function WMIDateStringToDate($Bootup) {
[System.Management.ManagementDateTimeconverter]::ToDateTime($Bootup)
}

# Main script
$Computer = $args[0] # adjust as needed
$computers = Get-WMIObject -class Win32_OperatingSystem -Impersonation 3 -computer $computer -authentication 6
#$computers = Get-WMIObject -class Win32_OperatingSystem -computer $computer

foreach ($system in $computers) {
$Bootup = $system.LastBootUpTime
$LastBootUpTime = WMIDateStringToDate($Bootup)
$now = Get-Date
$Uptime = $now – $lastBootUpTime
$d = $Uptime.Days
$h = $Uptime.Hours
$m = $uptime.Minutes
$ms= $uptime.Milliseconds

"System Up for: {0} days, {1} hours, {2}.{3} minutes" -f $d,$h,$m,$ms
}
# End script

Any ideas how I could use "start-job" for mutli-threading? Let's say I have 20 servers I need to run this script against, and I want them all running in parallel.

ANY help would be greatly appreciated!!!!

I'm using the Net.Mail.SmtpClient for this script and my pipeline looks something like this:
Get-Content c:\mailaddresses.txt | Split-Job {$smtp.Send($_, $emailTo, $subject, $body) }
I've set all the variables and also have $smtp = new-object Net.Mail.SmtpClient($smtpServer) in my script. Any help towards why I get this error?

Expressions are only allowed as the first element of a pipeline.
At line:7 char:51
+ $smtp.Send($_, $emailTo, $subject, $body) <<<<
+ CategoryInfo : ParserError: (:) [], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : ExpressionsMustBeFirstInPipeline

The first 155 lines of this script is the source for the split-job.ps1.