Active Directory Powershell saves you hours of manual work where in this case i was asked to copy office name to ipphone attribute in bulkf for all users. it took only 5 mins for 3000 users. It all matters how well you use your powershell skills
Copying Office Name to IpPhone attribute in Bulk
$USERS = Get-ADUser -Filter {DisplayName -like "test1*"} -Properties physicalDeliveryOfficeName,Ipphone
foreach($user in $USERS)
{
$copy = $user.physicalDeliveryOfficeName
Set-ADUser $user -Replace @{ipPhone=$copy}
}
Clear the attributes using Powershell
Set-ADUser $_.samaccountname -Clear extensionAttribute10
