If you want to delete (or any operation) multiple Items from a list based on certain condition then you can refer below PowerShell command where we can use CAML query to get exact items which we need to delete. Most of the time I found that the developers write PowerShell command which get all the items then Check the condition and delete the items. If you have large number items in list then it will get much time to execute.
Add-PSSnapin Microsoft.SharePoint.Powershell -ea SilentlyContinue
$web = get-spweb "[Site URL]"
$list = $web.lists["List Name"]
$ValueToCompare = "[Value To Compare]"
$FieldToCompare = "[Field Name To Compare]"
$query = New-Object Microsoft.SharePoint.SPQuery
$query.ViewAttributes = "Scope='Recursive'"
$query.RowLimit = 1000
$caml='<Where> <Eq> <FieldRef Name="'+$FieldToCompare+'" /><Value Type="Text">'+$ValueToCompare+'</Value> </Eq> </Where>'
Write-Host $caml
$query.Query = $caml
$query.ViewFields = "<FieldRef Name='ID'/>"
$query.ViewFieldsOnly = $true
do
{
$listItems = $list.GetItems($query)
$query.ListItemCollectionPosition = $listItems.ListItemCollectionPosition
foreach($item in $listItems)
{
Write-Host "Deleting Item - $($item.Id)"
$list.GetItemById($item.Id).delete()
}
}
while ($query.ListItemCollectionPosition -ne $null)
