How do I manually start a workflow to...

Question

I have a list with 2000+ items in it. I create a 2013 workflow in SPD that will look at an item and if it date is less than 1/1/2013 it will create a copy of the item on a list used for archiving, then delete the existing list item. 
My question is how do i manually start this workflow on the entire list (instead of selecting 1 item at a time)?
Thanks
James T.F

Answer 1

@Romeo
I've found to potential PowerShell scripts that could launch a list workflow from powershell, but they both throw errors for me. 
# URL of the Site
$web = Get-SPWeb -Identity "https://sharepointsrv/site1"
$manager = $web.Site.WorkFlowManager
# Name of the list
$list = $web.Lists["Shared Documents"]
# Name of the Workflow
$assoc = $list.WorkflowAssociations.GetAssociationByName("On Item Created","en-US")
$data = $assoc.AssociationData
$items = $list.Items
foreach($item in $items)
$wf = $manager.StartWorkFlow($item,$assoc,$data,$true)
$manager.Dispose()
$web.Dispose()
this gives me the following error
Exception calling "StartWorkflow" with "4" argument(s): "Value cannot be null."
At line:15 char:28
+ foreach($item in $items) { $workflow = $workFlowManager.StartWorkFlow($item,$wor ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : ArgumentNullException
The other PS Script
$sourceWebURL = '<URL>'
$sourceListName = '<List Name>'
$TargetWorkflow = '<Workflow Name>'
$spSourceWeb = Get-SPWeb $sourceWebURL
$spSourceList = $spSourceWeb.Lists[$sourceListName]
#Getting a Workflow manager object to work with.
$wfm = New-object Microsoft.SharePoint.WorkflowServices.WorkflowServicesManager($spSourceweb)
#Getting the subscriptions
$sub = $wfm.GetWorkflowSubscriptionService()
#Getting the specific workflow within the list of subscriptions on the specific list. (SP2010 associated workflows basically)
$WF = $sub.EnumerateSubscriptionsByList($spSourcelist.ID) | Where-Object {$_.Name -eq "$TargetWorkflow"}
#Getting a Workflow instance in order to perform my commands.
$wfis=$wfm.GetWorkflowInstanceService()
Foreach($item in $spSourceList){
#Creating the dictonary object I need to parse into StartWorkflow. This could be most other workflow commands.
$object = New-Object 'system.collections.generic.dictionary[string,object]'
$object.Add("WorkflowStart", "StartWorkflow");
$wfis.StartWorkflowOnListItem($WF, $item.ID, $object)}
Which then gives me this error.
Cannot convert argument "itemId", with value: "GUID", for "StartWorkflowOnListItem" to type "System.Int32": "Cannot convert the "GUID" value of type "System.Guid" to type
"System.Int32"."
At line:23 char:5
+ $wfis.StartWorkflowOnListItem($WF, $item.ID, $object)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodException
+ FullyQualifiedErrorId : MethodArgumentConversionInvalidCastArgument