Remove-OldItems

Remove-OldItems.ps1

# Original script located at https://gist.github.com/WimObiwan/e04d2e18c84161e2651260f4df701c07

# https://stackoverflow.com/a/40887001
function DisplayInBytes($num) 
{
    $suffix = "B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"
    $index = 0
    while ($num -gt 1kb) 
    {
        $num = $num / 1kb
        $index++
    } 

    "{0:N1} {1}" -f $num, $suffix[$index]
}

function Remove-OldItems {
    [CmdletBinding(SupportsShouldProcess = $true)]
    param (
        # Specifies a path to one or more locations. Wildcards are permitted.
        [Parameter(Mandatory=$true,
                   ValueFromPipeline=$true,
                   ValueFromPipelineByPropertyName=$true,
                   HelpMessage="Path to one or more locations.")]
        [ValidateNotNullOrEmpty()]
        [SupportsWildcards()]
        [string[]]
        $Path,
 
        [switch]
        $Recurse,
 
        [int]
        $RemoveDaysLastWriteTime = -1,
 
        [switch]
        $RemoveEmptyDirectories = $false
    )
     
    begin {
        [long]$totalSize = 0
    }
     
    process {
        if ($RemoveDaysLastWriteTime -ge 0) {
            Get-ChildItem -File -Recurse:$Recurse $Path `
                | Where-Object { $_.LastWriteTime -lt (Get-Date).AddDays(-$RemoveDaysLastWriteTime) } `
                | %{ $totalSize += $_.Length; $_ | Remove-Item }
        }
 
        if ($RemoveEmptyDirectories) {
            Get-ChildItem -Directory -Recurse:$Recurse $Path | Sort-Object FullName | Where-Object {
                if (@(Get-ChildItem $_.FullName).Count -eq 0) {
                    Remove-Item $_.FullName
                }
            }
        }
    }
     
    end {
        Write-Warning "Removed $totalSize bytes ($(DisplayInBytes $totalSize))"
    }
}