base64 - base64 encode/decode data and print to standard output
SYNOPSIS
base64
[OPTION] [FILE]
DESCRIPTION
Base64 encode or decode FILE, or standard input, to standard output.
-w, --wrap=COLS
Wrap encoded lines after COLS character (default 76).
Use 0 to disable line wrapping.
-d, --decode
Decode data.
-i, --ignore-garbage
When decoding, ignore non-alphabet characters.
--help
Display this help and exit.
--version
Output version information and exit.
With no FILE, or when FILE is -, read standard input.
The data are encoded as described for the base64 alphabet in RFC 3548.
Decoding require compliant input by default, use --ignore-garbage to
attempt to recover from non-alphabet characters (such as newlines) in
the encoded stream.