SharePoint Enumerate Groups and Users Script

I am trying to create a script to enumerate the groups within sharepoint 2010 and the members of each group and output it to a file.

i have written this so far:
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")
$site = New-Object Microsoft.SharePoint.SPSite("https://site name")
$groups = $site.RootWeb.sitegroups
foreach ($grp in $groups) {"Group: " + $grp.name; foreach ($user in $grp.users) {"  User: " + $user.name} }

which throws an error at: foreach ($user in $grp.users) {"  User: " + $user.name} }

the error is:
The following exception was thrown when trying to enumerate the collection: "<n
ativehr>0x80070005</nativehr><nativestack></nativestack>".
At line:1 char:58
+ foreach ($grp in $groups) {"Group: " + $grp.name; foreach <<<<  ($user in $gr
p.users) {"  User: " + $user.name} }
    + CategoryInfo          : NotSpecified: (:) [], ExtendedTypeSystemException + FullyQualifiedErrorId : ExceptionInGetEnumerator

if i remove the part where it errors and just run
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")
$site = New-Object Microsoft.SharePoint.SPSite("https://site name")
$groups = $site.RootWeb.sitegroups
foreach ($grp in $groups) {"Group: " + $grp.name} }

it works and enumerates all groups.

none of it outputs to a file as yet.

any help would be greatly appreciated.
LVL 2
Mark WoodNetwork AdministratorAsked:
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Jamie McAllister MVPSharePoint ConsultantCommented:
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Mark WoodNetwork AdministratorAuthor Commented:
i saw that one but couldn't get it to output anything.

not sure what i am missing.

any help would be awesome
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Jamie McAllister MVPSharePoint ConsultantCommented:
OK, your script works fine for me.

First I thought that $user.name was missing a semicolon, but actually the script worked with or without that.

I ran the Powershell console as Admin. Did you?
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Jamie McAllister MVPSharePoint ConsultantCommented:
Not that it should matter, but I also broke it onto different lines;

[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")
$site = New-Object Microsoft.SharePoint.SPSite("http://MyUrl")
$groups = $site.RootWeb.sitegroups
foreach ($grp in $groups) 
{"Group: " + $grp.name; 
	foreach ($user in $grp.users) 
	{"  User: " + $user.name} 
} 

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Mark WoodNetwork AdministratorAuthor Commented:
i edited it to be
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")
$site = New-Object Microsoft.SharePoint.SPSite("https://site name")
$groups = $site.RootWeb.sitegroups
foreach ($grp in $groups) {"Group: " + $grp.name; foreach ($user in $web.users) {"  User: " + $user.name} }

and i get a list of users and groups. i havent been able to get it to output to a file as yet.
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Mark WoodNetwork AdministratorAuthor Commented:
ok i am at a loss and now my core script isn't working
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Mark WoodNetwork AdministratorAuthor Commented:
ok .. i have re-worked the script as follows:

[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint") | Out-Null

#Instantiate the SPSite class for the root-level site collection
$rootsite = New-Object Microsoft.SharePoint.SPSite("https://mysite")

#Assign the SPGroupCollection containing all the groups in the site collection to a variable
$rootgroups = $rootsite.RootWeb.SiteGroups


#Uncomment the following line to get a tabular presentation of group names and user counts
$rootgroups | Select-Object -Property Name, @{Name="Number of Users";Expression = {$_.Users.Count}}


#Instantiate necessary objects and start writing to XML output
$allprincipals = ""
$textwriter = New-Object -typeName "System.IO.StringWriter"
$xmlwriter = New-Object -typeName "System.Xml.XmlTextWriter" -argumentList $textwriter
$xmlwriter.Formatting = [System.Xml.Formatting]::Indented
$xmlwriter.WriteStartElement("SiteGroups")
$xmlwriter.WriteAttributeString("Count",$rootgroups.Count)

#Output each group's information
foreach ($group in $rootgroups)

    {
        $xmlwriter.WriteStartElement("Group")
        $xmlwriter.WriteAttributeString("Name",$group.Name)
        $xmlwriter.WriteAttributeString("MemberCount",$group.Users.Count)
       
        #Output each user's information
        foreach ($user in $group.Users)
{
                $xmlwriter.WriteStartElement("Member")
                $xmlwriter.WriteAttributeString("Name",$user.Name)
                $xmlwriter.WriteAttributeString("Login",$user.LoginName)
                #SPUser object is not disposable, so nullify the variable instead
                $user = $null
                $xmlwriter.WriteEndElement()
            }
        #SPGroup object is not disposable, so nullify the variable instead
        $group = $null
        $xmlwriter.WriteEndElement()

}

#Call Close on the XML writer - this automatically closes all open tags
$xmlwriter.Close()

#Convert the Text Writer object to string and send to standard output
$textwriter.ToString()

it gives me what i am looking for but it ouly ouputs to the screen not a file.

if you could help me get the output to a file it would be greatly appreciated.
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Jamie McAllister MVPSharePoint ConsultantCommented:
To write to file you just need to change the last line like so;

$textwriter.ToString() > 'C:\temp\output.txt'
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Mark WoodNetwork AdministratorAuthor Commented:
Thanks so much for all your help. i was drawing a complete blank.
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