Encode/Decode text to/from Base64 on a Mac
encode: $ openssl base64 -in base64.decoded.txt -out base64.encoded.txt decode: $ openssl base64 -d -in base64.encoded.txt -out base64.decoded.txt
encode: $ openssl base64 -in base64.decoded.txt -out base64.encoded.txt decode: $ openssl base64 -d -in base64.encoded.txt -out base64.decoded.txt