Copy the value of one column to another column in the same SharePoint List using Powershell script

Powershell Script to Copy the value of one column to another column in the same SharePoint List.


$site = new-object Microsoft.SharePoint.SPSite("http://localhost")
$web =  Get-SPWeb -Identity http://localhost
$list =$web.Lists["List/Library Name"]
$items = $list.items
    foreach ($item in $items)
    {
    $sourcevalue = $item["Column 1"]
    $item["Column 2"] = $sourcevalue
    write-host $sourcevalue
    $item.update()
    }

$list.update()