mybase64

A minimal Bash utility for encoding and decoding Base64 strings from the command line.

Usage

./mybase64.sh <STRING> [-d]

Arguments:

• <STRING> — The string to encode, or the Base64 string to decode.
• -d — (Optional) Decode mode. When provided, the input is decoded from Base64.

Examples

Encode a string:

$ ./mybase64.sh "Hello, World!"
SGVsbG8sIFdvcmxkIQ==

Decode a Base64 string:

$ ./mybase64.sh "SGVsbG8sIFdvcmxkIQ==" -d
Hello, World!