“How do I write a harmless computer virus…”

The full question, submitted anonymously, was: “How do I write a harmless computer virus that, when run, restarts the computer and keeps opening a terminal instead of windows until the user say yes or some specific command then everything goes normal again?”

That’s not a virus — it’s just a script or small program — and it’s not harmless.

It’s vaguely reminiscent of computer pranks from 20+ years ago, when a small script or simple program would keep opening windows until the PC crashed or bogged down to the point of unusability.

Great fun? I never thought so, because it could cause the victim to lose work — making this a kind of terrible, not-at-all-funny prank.

Plus, reading between the lines, I’m guessing you’re trying to restrict logins to a PC that you don’t have administrative rights to. (If you were an admin, you could easily control access by totally above-board and legit means.)

So, to sum up your question: You’re seeking a prank-level, potentially harmful means to control access to a PC where you’re not the Admin, right?

This is a very, very bad idea.

If you need to restrict access to the PC, use the administrative tools built-in to your OS.

If you’re not authorized to act as Admin, then what the heck are you trying to do?

Maybe you should re-think this idea entirely.

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