How would I do the following in PowerShell?
1. I want to edit the Telephone Number, Mobile and Fax properties in multiple users.
2. I only want to edit those properties if any or all of them are populated with a dash ( - ).
3. If those properties are populated with a dash ( - ), then I would like to remove it and leave the property empty.
This is meant to be done to all users in a domain with 2 thousand users and has a structure of many OUs.