How do I apply a custom master page via PowerShell

Start → Right click on SharePoint 2013 Management Shell → Run as different user

• Login :Domain\SP-Farm
• Password : ******

Then Enter this script :

$site = new-object Microsoft.SharePoint.SPSite("http://Sharepoint")

$web = $site.OpenWeb("/MySite")

# To apply a master page on native pages (default)

$web.MasterUrl = "/_catalogs/masterpage/myMasterPage.master"

# To apply a master page on custom pages

$web.CustomMasterUrl = "/_catalogs/masterpage/myMasterPage.master"

$web.Update()

$web.Dispose()