Add multiple users to AD group with Powershell

Hi EE

Can someone school me on a better way of adding multiple users to an AD group ? the script below seems to take along time.
Wondering what others are using ..



Foreach ($User in GC C:\PS\Users.txt){
GC C:\PS\groups.txt | % {
Add-ADGroupmember -identity $_ -member $User
	}
}

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MilesLoganAsked:
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becraigCommented:
$users = GC C:\PS\Users.txt
GC C:\PS\groups.txt | % {
$gname = $_
$users | % {Add-ADGroupmember -identity $gname -member $_}
      }

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footechCommented:
You can specify an array for the -members parameter of Add-ADGroupMember.
$Users = GC C:\PS\Users.txt
GC C:\PS\groups.txt | % {
Add-ADGroupmember -identity $_ -members $Users
}

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MilesLoganAuthor Commented:
This will work ! thank you
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footechCommented:
I haven't tested, but I would be highly surprised if becraig's performs any different than what you originally posted.
becraigCommented:
So Footech you think multiple reads from disk will have the same overhead as looping through an array ?
footechCommented:
No, you're absolutely right. The single read will definitely be faster.  For some reason I was only focused on the multiple calls to Add-ADGroupMember.  But now you've got me curious about the relative speed of the disk read vs. the AD call.
becraigCommented:
Incidentally I think your approach is faster single ad call against the array.

I just provided one solution slightly faster than the author had initially been using.
MilesLoganAuthor Commented:
Thanks guys , I appreciate the additional comments .. You both are awesome 🙆!
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