Import-Module ActiveDirectory 
$names = Get-Content input.txt 
$add = "Reason to disable user" 
#Process users. 
Foreach ($name in $names) { 
$users = get-aduser -Identity "$name" 
#Process users. 
Foreach ($user in $users) { 
$user >>OldName.log 
Try {Disable-ADAccount -Identity "$user"} 
Catch {Write-output "Unable to Disable $user" >>Error.txt} 
$newname = $user.surname + ", " + $user.GivenName + " ($add)" 
Try {Rename-ADObject -identity "$user" -Newname "$newname" -server 5-E.ME} 
Catch {Write-output "Unable to change DN for $user to $newname" >>ERROR.txt"} 
} 
} 

UserName
Jim.Bob
SamAccountName