powershell 这将遍历站点下的所有子站点，然后查找列表并更新列表中的链接字段。这是upda的一个例子

Posted 2021-05-23

Add-PsSnapin Microsoft.SharePoint.PowerShell

$TopSiteUrl = 'http://portal.opwftg.com/sites/OPWSS/Teams/Safety/OES/Cells'
$topSite = Get-SPWeb $TopSiteUrl
foreach($s in $topSite.Webs)
{
	$s.URL
	$site = Get-SPweb $s.URL
	$mList=$site.Lists["Linksc"]

	$Item = $mList.Items[0]
    $Item["LinkLocation"] = 'http://portal.opwftg.com/sites/OPWSS/Teams/Safety/OES/Cells/_layouts/15/start.aspx#/, Cells'
    $Item.Update()
}