**Warning:** These commands should NEVER be executed on will. They will most likely destroy your system (or ruin a major part) before you can stop them, however, if you want to see how they work, you could run them inside a Virtual Machine.
So, let’s get started:
"rm -rf /"
This command basically means “remove all files (even Read-Only files) recursively in the root (top) directory” (can also be written as “shred -rf /)”
This command is known as a ‘Fork Bomb’. It operates by defining a function called ‘:’, which calls itself twice, once in the foreground and once in the background. It keeps on executing again and again till the system freezes.
"'command' > /dev/sda"
This command writes the output of ‘command’ to the specified drive. This is considered deadly because it overwrites any data on the drive.
This command is known as a format command. It will format the specified drive to an ext3 format, wiping everything on the drive.
"dd if=/dev/random of=/dev/sda"
This command writes random data onto the specified drive and overwrites any data within that drive. These are a few of the many deadly commands for Linux.