I have a task in hand where i need to copy ExtensionAttribute14 to 9. This needs to be a script which i can run daily with the Task Scheduler. I need to ensure that this script does not consume much resources. The domain has around 80000 users.
I have exported the data in csv file that includes the SamAccountName,ExtensionAttribute14 and ExtensionAttribute9 with the below one liner.
Now i need to compare Values in extensionattribute14 and extensionattribute9 in this csv file and create a new csv file with the difference. Then i need use the new csv file that has the difference and copy the value from extensionattribute14 to extensionattribute9 from this new CSV file.