Creating Sites in SharePoint 2010 Using PowerShell

Creating new SharePoint sites and site collections using PowerShell is extremely easy in SharePoint 2010. Just follow these few quick steps:

1. Launch the SharePoint 2010 Management Shell
2. Get a listing of all the site templates

   Get-SPWebTemplate

   

3. Select the template you want to instantiate

   $template = Get-SPWebTemplate "[TEMPLATENAME]"

   

4. Create the new site

   New-SPSite –URL [URL] –owneralias domain\username –template $template

   

And that’s all there is too it.

References:

TechNet