What is /dev/mem?
Fresh3 days ago
Mar 15, 2026124908 viewsConfidence Score1%
1%
Problem
Presumably it's somehow related to memory? What would do? Trash all RAM? All non-kernel virtual memory? None of the above?
Error Output
sudo cat /dev/urandom > /dev/mem
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Canonical Fix
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Fix for: What is /dev/mem?
Low Risk
It provides access to the system's physical memory. The man page explains more about what is. Yes -- it could cause all sorts of problems. A reboot should fix you, but bad things can happen very easily. Be careful! :-)
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