# Add all users in OU to security group
While working on figuring out how to add all of RS domestic to a security group quickly, developed this powershell script.
It will quickly add all the users in the listed OU to the specific security group listed.
Import-Module ActiveDirectory
$ou = "OU=RHSC,DC=RHSC,DC=local"
$grp = "SafetySite-Read"
Get-ADUser -SearchBase $ou -Filter \* | ForEach-Object {Add-ADGroupMember -Identity $grp -Members $\_ }
\#see who is not a member of a security group within an OU
$ou = "OU=RHSC,DC=RHSC,DC=local"
$grp = "RSHub-Read"
$results = @()
$users = Get-ADUser -SearchBase $ou -Properties memberof -Filter \*
foreach ($user in $users) {
$groups = $user.memberof -join ';'
$results += New-Object psObject -Property @{'User'=$user.name;'Groups'= $groups}
}
$results | Where-Object { $\_.groups -notmatch $grp } | Select-Object user