Today I needed to append, not overwrite, the description variable for a list of users. To do this, I created a simple .txt file containing the usernames I wanted to change.

lewish
nicor
maxv
sebastienv
kimir
danielr

I then ran this very simple command which takes the existing Description and adds the phrase “User Enabled 07/06/2016” to the end of the Description.

Get-Content "c:\migration\userstest.txt" | get-aduser -Properties Description | ForEach-Object { Set-ADUser $_ -Description "$($_.Description) User Enabled 07/06/2016" }

Easy peasy lemon squeezy!