Update a bunch of items to edit a field

UpdateItems.ps1

<#
    .SYNOPSIS
        Updates a field in a set of items
#>

$items = Get-ChildItem -Recurse | Where TemplateName -eq "Redirect Url"

foreach( $item in $items ) {
    
    if ($item."Requested Url".StartsWith("/sitecore") ) {
    
        $newUrl = $item."Requested Url" -replace "/sitecore/admin/sitecore/content/xxx/home",""
        
        Write-Host $item."Requested Url"

        $item."Requested Url" = $newUrl
    }
}