Upload STP File to the List Template Gallery in SharePoint using PowerShell

    1.Click "Start" button
    2.Choose the "Microsoft SharePoint 2010 Products"
    3.Click the "SharePoint 2010 Management Shell" [ run as Administrator ]

Syntax:-

   $web = Get-SPWeb "SiteCollectionURL"

   $spFolder = $web.GetFolder("List Template Gallery")

   $spFileCollection = $spFolder.Files

   $file = Get-ChildItem "StpfilePath"

   $spFileCollection.Add("_catalogs/lt/StpFileName", $file.OpenRead(), $true)

Example:-

   

  $web = Get-SPWeb "http://Abcd/sites/SamSite"

  $spFolder = $web.GetFolder("List Template Gallery")

  $spFileCollection = $spFolder.Files

  $file = Get-ChildItem "C:\Users\Administrator\Desktop\Mohamed sithik\Employee.stp"

  $spFileCollection.Add("_catalogs/lt/Employee.stp", $file.OpenRead(), $true)