md5

usage: md5 [-pqrtx] [-s string] [files ...]

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openssl enc -aes-256-cbc

openssl enc aes-256-cbc -e -salt -pbkdf2 -iter 10000 -in plaintextfilename -out encryptedfilename

openssl enc aes-256-cbc -d -salt -pbkdf2 -iter 10000 -in encryptedfilename -out plaintextfilename

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base64

❯ echo mgg | base64
bWdnCg==
~/Downloads ❯ echo bWdnCg==                                system 16:18:17
_p9k_deschedule_redraw:zle:2: No handler installed for fd 14
_p9k_deschedule_redraw:3: failed to close file descriptor 14: bad file descriptor
❯ echo bWdnCg== | base64 -D
mgg

imgcat

pip install imgcat
imgcat lxz.jpg

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imagemagick

brew install imagemagick
brew reinstall --cask xquartz
display bird.jpg