This post serves more as a reference that an introduction to Powershell Jobs.

• Cmdlets are: Get-Job, Receive-Job, Remove-Job, Resume-Job, Start-Job, Stop-Job , Suspend-Job and Wait-Job
  but other commands have -AsJob parameters (Get-WMIObject, Invoke-Command, CDXML snippets)
• Help can be found in the following topics:
  • about_Jobs
  • about_Job_Details
  • about_Remote_Jobs
  • about_Scheduled_Jobs
  • about_Scheduled_Jobs_Advanced
  • about_Scheduled_Jobs_Basics
  • about_Scheduled_Jobs_Troubleshooting
• Suspend-Job and Resume-Job are only available with workflows
• Receive-Job deletes the data it sends to you except if you use -Keep as a parameter
• PSJobTypeName can be
  • BackgroundJob (regular Start-Job),
  • WMIJob (Get-WmiObject -AsJob),
  • CimJob (use CDXML files, not Get-CimInstance),
  • PSScheduledJob (Register-ScheduledJob)
  • PSWorkflowJob (nameofmyworkflow -AsJob)
• As a job is run in another Windows Powershell process than yours, you cannot use it with cmdlets such as Register-WMIEvent
• Start-Job runs the command locally (but that command may perform remote connections), whereas Invoke-Command runs the command remotely and you get the response back.
• If you use parameter(s), you must use ArgumentList to pass them around as jobs are run in separate Powershell instances and processes (unsecapp for Get-WMIObject,  wsmprovhost for Invoke-Command)
• Sessions (via Enter-PSSession or New-PSSession) are a way to maintain that remote connection when you have multiple script blocks to run on a target machine
• ScheduledTasks is a CDXML (WMI Wrapper) module about the TaskScheduler, whereas PSScheduledJob manages the Powershell Scheduled Jobs which are… tasks found under \Microsoft\Windows\Powershell\ScheduledJobs
• ScheduledJobs are primarily maintained with Register-ScheduledJob, but to work with result you must import explicitly the module and you can only see the jobs that you create/manage in your context whose results are stored in %AppData%\Local\Microsoft\Windows\Powershell\ScheduledJobs\<JobName>\Output
• If you run jobs inside workflows, you lose the result because they are still run in an external process to yours
• Some snippets:
  
  Powershell Jobs examples

  PowerShell

  # Simple Start-Job -ScriptBlock { ... some action ...} -Name MySupremeJob Get-Job -Name MySupremeJob | select PSBeginTime, PSEndTime, @{Name='Duration';Expression={$_.PSEndTime-$_.PSBeginTime}} # with parameter Start-Job -Scriptblock {param([string]$data) Get-Service -Name $data} -ArgumentList $data #WMI Method $stuckjava = Get-WMIObject -Class Win32_Process -Filter "Name='javaw.exe'" Invoke-WmiMethod -InputObject $stuckjava -Name Terminate -AsJob # ScheduledJOb $everyday = New-JobTrigger -Daily -At "23:59" $god=New-ScheduledOption -RunElevated Register-ScheduledJob -Name RebootMe -ScritpBlock {Restart-Computer} -Trigger $everyday -ScheduledJobOption $god #workflows workflow donothing { Start-Sleep -Seconds 60; Suspend-Workflow; Write-Host "Waking up myself" } #auto-suspend workflow stilldonothing { Start-Sleep -Seconds 60; Checkpoint-Workflow; Write-Host "Waked up" } #suspend the job from elsewhere #Remote Sessions launching jobs $faraway = New-PSSession -ComputerName mydistantpc Invoke-Command -Session $faraway -ScriptBlock {Start-Job -Name WhichSvc -Scriptblock { Get-Service } } Invoke-Command -Session $faraway -ScriptBlock {Receive-Job -Name WhichSvc -Keep } Invoke-Command -Session $faraway -ScriptBlock {Get-Job | Remove-Job } $faraway | Remove-PSSession

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  # Simple Start-Job -ScriptBlock { ... some action ...} -Name MySupremeJob Get-Job -Name MySupremeJob | select PSBeginTime, PSEndTime, @{Name='Duration';Expression={$_.PSEndTime-$_.PSBeginTime}} # with parameter Start-Job -Scriptblock {param([string]$data) Get-Service -Name $data} -ArgumentList $data   #WMI Method $stuckjava = Get-WMIObject -Class Win32_Process -Filter "Name='javaw.exe'" Invoke-WmiMethod -InputObject $stuckjava -Name Terminate -AsJob # ScheduledJOb $everyday = New-JobTrigger -Daily -At "23:59" $god=New-ScheduledOption -RunElevated Register-ScheduledJob -Name RebootMe -ScritpBlock {Restart-Computer} -Trigger $everyday -ScheduledJobOption $god #workflows workflow donothing { Start-Sleep -Seconds 60; Suspend-Workflow; Write-Host "Waking up myself" } #auto-suspend workflow stilldonothing { Start-Sleep -Seconds 60; Checkpoint-Workflow; Write-Host "Waked up" } #suspend the job from elsewhere #Remote Sessions launching jobs $faraway = New-PSSession -ComputerName mydistantpc Invoke-Command -Session $faraway -ScriptBlock {Start-Job -Name WhichSvc -Scriptblock { Get-Service } } Invoke-Command -Session $faraway -ScriptBlock {Receive-Job -Name WhichSvc -Keep } Invoke-Command -Session $faraway -ScriptBlock {Get-Job | Remove-Job } $faraway | Remove-PSSession