How to create sharepoint group using Powershell script

01. function New-SPGroup {

02

<#

03

.Synopsis

04	Use New-SPGroup to create a SharePoint Group.

05	.Description

06	This function uses the Add() method of a SharePoint RoleAssignments property in an SPWeb to create a SharePoint Group.

07

.Example

08	C:\PS>New-SPGroup -Web http://intranet -GroupName "Test Group" -OwnerName DOMAIN\User -MemberName DOMAIN\User2 -Description "My Group"

09	This example creates a group called "Test Group" in the http://intranet site, with a description of "My Group".  The owner is DOMAIN\User and the first member of the group is DOMAIN\User2.

10

.Notes

11	Name: New-SPGroup

12	Author: Ryan Dennis

13	Last Edit: July 18th 2011

14	Keywords: New-SPGroup

15

.Link

16

17	http://www.rameshsps2010.blogspot.com/

18

19	http://twitter.com/ursrams19

20

21

.Inputs

22

None

23

.Outputs

24

None

25	#Requires -Version 2.0

26

#>

27	[CmdletBinding()]

28

Param(

29	[Microsoft.SharePoint.PowerShell.SPWebPipeBind]$Web,

30	[string]$GroupName,

31	[string]$OwnerName,

32	[string]$MemberName,

33	[string]$Description

34

)

35	$SPWeb = $Web.Read()

36	if ($SPWeb.SiteGroups[$GroupName] -ne $null){

37	throw "Group $GroupName already exists!"

38

}

39	if ($SPWeb.Site.WebApplication.UseClaimsAuthentication){

40	$op = New-SPClaimsPrincipal $OwnerName -IdentityType WindowsSamAccountName

41	$mp = New-SPClaimsPrincipal $MemberName -IdentityType WindowsSamAccountName

42	$owner = $SPWeb | Get-SPUser $op

43	$member = $SPWeb | Get-SPUser $mp

44

}

45

else {

46	$owner = $SPWeb | Get-SPUser $OwnerName

47	$member = $SPWeb | Get-SPUser $MemberName

48

}

49	$SPWeb.SiteGroups.Add($GroupName, $owner, $member, $Description)

50	$SPGroup = $SPWeb.SiteGroups[$GroupName]

51	$SPWeb.RoleAssignments.Add($SPGroup)

52	$SPWeb.Dispose()

53	return $SPGroup

54

}