CLI tool that encodes and decodes a text by Caesar cipher.

CLI tool accepts 4 options (short alias and full name):

-s, --shift: a shift - a number (required)

-i, --input: an input file

-o, --output: an output file

-a, --action: an action: encode/decode (required)

Install:

$ npm install

$ node my_caesar_cli -a encode -s 7 -i "./plain.txt" -o "./output.txt"

$ node my_caesar_cli --action encode --shift 7 --input plain.txt --output encoded.txt

$ node my_caesar_cli --action decode --shift 7 --input decoded.txt --output plain.txt

input.txt: This is secret. Message about "_" symbol!

output.txt: Aopz pz zljyla. Tlzzhnl hivba "_" zftivs!