This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Researchers have found undocumented commands ...
There's more to ls than just seeing a list of files and folders.
Linux does exactly what you tell it - dangerous commands can wipe or brick your system. Common lethal commands: sudo rm -rf /*, sudo chmod -R 777 /, :(){ :|:& };:, dd if=/dev/urandom of=/dev/sda Never ...