base64 transforms data read from a file, or standard input, into (or from) base64 encoded form. The base64 encoded form uses printable ASCII characters to represent binary data. Synopses:
base64 [option]... [file] base64 --decode [option]... [file]
The base64 encoding expands data to roughly 133% of the original. The format conforms to RFC 4648.
The program accepts the following options. Also see Common options.
The default is to wrap after 76 characters. Use the value 0 to
disable line wrapping altogether.
An exit status of zero indicates success, and a nonzero value indicates failure.