I was a little too brave in Terminal (manual "sudo rm -rf name_of_icons/themes" cleaning) and it seems I broke Unity.
At first I did see some icons in left-pane, but after using command
unity --reset-icons all the icons are missed. After entering and confirming this command I got a bunch of errors-related reports of "something" missing (I really didn't remember all of it).
And if I click on the Launcher upper-left button, Ubuntu freezes.
So, the question is, how to restore Ubuntu Unity? If possible, without using any other settings. Via terminal, maybe with Ubuntu on my DVD?
Thanks in advance!
A few hours later I installed mate-environment-desktop-core via terminal. So I logged in in MATE and saw that there are also some icons missing. There, where they should be, is just a grey square. So maybe a problem is deepest? What do you suggest?