Possible Duplicate:
What should I do when Ubuntu freezes?
Let's say the entire desktop freezes and nothing's responding... In Windows I'd just hit Ctrl+Alt+Del then find the application that's "Not Responding" and close it, or try ending processes until the system comes back to normal.
What would be the equivalent in Ubuntu? Is there a sort of task manager that can be used for this, or do I have to go through CLI for this? What would be the commands for doing what I mentioned earlier (listing and closing running apps+processes)?
