smbios-token-ctl pick one of the "dangerous - permanent write once" tokens

Sudo pacman -Syu

shutdown -h now

Sucks when the host is remote and you do a -h instead if a -r

alias cp="rm -rf"

bonus points for putting it into the shells RC file.

Not as destructive as deleting root, but a lot more sneakier

been there and done rm -rf as root

dd if=/dev/urandom of=/dev/sdx will overwrite every single byte of /dev/sdx with random data. Replace /dev/sdx with the drive you want to wipe. Optionally, specify a larger block size to speed it up more.

hdparm --yes-i-know-what-i-am-doing --sanitize-crypto-scramble /dev/sda

Modern disks have encryption enabled in disk level. This will change the encryption key on the disk, meaning that in seconds all data in the disk is in unrecoverable state.

This is way better than writing the whole disk 0's or rm -fr /