My RHEL 6.6 VM is running behind Centrify Active Directory.
When I do
sudo id 'any_existing_user'
it will give back info about that user.
But when I do
sudo usermod -c 'Comments' 'any_existing_user'
it will reports error that 'any_existing_user' does not exist.
Could someone help me analyze why this is happening?
PS: I am not simply adding comments for fun, I trace down this issue when installing important packages.