Thought this was worth reposting…
ATTENTION ALL USERS: Malicious Commands
We’ve recently had an increase in the number of dangerous commands being posted on the forums. Don’t pretend you don’t know what I mean — commands that cause massive damage or disruption to the user’s computer.
I’d just like to caution those thinking of doing this that UbuntuForums has a strict zero-tolerance policy when it comes to posting dangerous commands. If you post one of them, particularly in a support thread disguised as advice, expect to be instantly and permanently BANNED, at the account, e-mail, IP, or ISP level. I do not care about intent — if you mean it as a joke, it is not funny. If you mean it as a lesson, go teach it somewhere else. This behavior is absolutely against the Forum Guidelines and Ubuntu Code of Conduct.
I’d also like to remind users to be cautious when someone tells you to run some command or download some script as a solution to your problem. When in doubt as to the safety of the procedure, it’s always a good idea to wait for more opinions, and/or have the command explained to you and verify if the explanation makes sense by consulting readily available documentation on Linux commands (such as manpages). No matter how hard we try to stay on top of all posts in realtime, we are not perfect.
The UbuntuForums Staff.
More info as to what constitutes a “malicious command” at the link.