Here you can find some encoding and decoding python scripts to run them directly from the terminal :
Run this command-line in your terminal : python3 <file-name.py> '<text-to-enc/dec>'
Note:
the single quotes used to get the full string even if it contains spaces. if you want to use double quotes instead, make sure to use the "" before every special character.
Exmample :
python3 Base64ToAscii.py 'SGVsbG8sIFdvcmxkIQ'The output will be : Hello, World!