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/ caesar-cipher.sh
Last active
July 19, 2024 21:01
A really simple Caesar Cipher in Bash (or Shell) using `tr`, can also easily be adjusted to encrypt/decrypt ROT13 instead.
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| # Caesar cipher encoding | |
| echo "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG" | tr '[A-Z]' '[X-ZA-W]' | |
| # output: QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD | |
| # Caesar cipher decoding | |
| echo "QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD" | tr '[X-ZA-W]' '[A-Z]' | |
| # output: THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG | |
| # Can also be adjusted to ROT13 instead |