Question

How do you decrypt a ROT13 encryption on the terminal itself?

Answer 1

Decrypting ROT13 encryption is super simple because it's a symmetric cipher, meaning the encryption and decryption processes are identical.

ROT13 (rotate by 13 places) shifts each letter in the alphabet by 13 positions.

To decrypt ROT13, you just apply the same operation again, and it reverses the text back to the original.

You can easily decrypt a ROT13 encoded message directly in the terminal using the tr command.

Here's an example:

• echo "Uryyb Jbeyq" prints the ROT13 encoded text, which is "Hello World" in ROT13. 
• tr 'A-Za-z' 'N-ZA-Mn-za-m' shifts the letters back by 13 positions, turning it back into plain text. 

In this case, "Uryyb Jbeyq" becomes "Hello World".