Retrieving specific information (email addresses) from Active Directory in text/Excel file

Question

Hello, out there. I'm just beginning to learn PowerShell finally, I'm very interested in learning cooler and better things.
I wanted to know if retrieving information from Active Directory based on a text or spreadsheet file was possible.
An example: I have a list of Windows Usernames from an Excel file, and I need to pull what email addresses they have from AD. They're a part of different OUs either. Rather than manually look up each individual account I'm researching a way to grab this
info.
I would very much appreciate a push in the right direction.
Thank you!
LiQuiD_FuSioN

Answer 1

Hi,
Sure, that's definitely possible. You can use the Active Directory cmdlets to retrieve this information. Here's an example of reading input from a text file (just usernames in the text file):
Get-Content .\userList.txt | ForEach {
Get-ADUser -Identity $_ -Properties EmailAddress
You can also read input from a CSV file quite easily. This example assumes a header of Username:
Import-Csv .\userList.csv | ForEach {
Get-ADUser -Identity $_.Username -Properties EmailAddress
Finally, here's a link to the Get-ADUser syntax:
http://technet.microsoft.com/en-us/library/ee617241.aspx
Don't retire TechNet! -
(Don't give up yet - 12,700+ strong and growing)