No, I don’t believe in ghosts

Not many news here in México

for the terminal’s operating system

Here is the command that will render a LUKS encrypted device un recoverable
From the documentation.

5.4 How do I securely erase a LUKS container?

For LUKS, if you are in a desperate hurry, overwrite the LUKS header and key-slot area. For LUKS1 and LUKS2, just be generous and overwrite the first 100MB. A single overwrite with zeros should be enough. If you anticipate being in a desperate hurry, prepare the command beforehand. Example with /dev/sde1 as the LUKS partition and default parameters:

head -c 100000000 /dev/zero > /dev/sde1; sync

I think in these days, rm will warn you if you do a
rm -rf /

Ouch!

What does this do? nobody can read any file? would sudo chmod 777 fix it at least to a usable system?

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I can’t remember but having my hard drive encrypted, I believe there is a single file that messing with it would render the drive not decryptable.

1.- I will start with the infamous rm-rf /

The US military is there to protect their country’s “Freedom”