Item Version Pruner

Remove-OldItemVersion.ps1

function Remove-OldItemVersion {
	[CmdletBinding()]
	param(
		[Parameter(Position = 0,Mandatory = $true,ValueFromPipeline = $true)]
		[ValidateNotNullOrEmpty()]
		[Sitecore.Data.Items.Item]$Item,
		[Parameter(Position = 1,Mandatory = $true)]
		[ValidateNotNullOrEmpty()]
		[int]$MaxVersions
	)
	process {
		while ($Item.Versions.Count -gt $MaxVersions) {
			$Item.Versions[$Item.Versions.GetVersionNumbers()[0]].Versions.RemoveVersion();
		}
	}
}

# items underneath this path to be pruned
$path = "master:\content"
#languages can be defined specifically like "en", "pl-PL' or with wildcards like "*"
$languages = "*"

#Check how many versions are there in each language in each of the items before the trim
Get-ChildItem $path -Language $languages -Recurse | ft name,language,@{ Name = "VerCount"; Expression = { $_.Versions.Count } }

#ACTION HAPPENS HERE
Get-ChildItem $path -Language $languages -Recurse | Remove-OldItemVersions -max 10

#Check how many versions are there in each language in each of the items after the trim
Get-ChildItem $path -Language $languages -Recurse | ft name,language,@{ Name = "VerCount"; Expression = { $_.Versions.GetVersionNumbers().Length } }