coreutils: base64 invocation

1 
1 3.6 ‘base64’: Transform data into printable data
1 ================================================
1 
1 ‘base64’ transforms data read from a file, or standard input, into (or
1 from) base64 encoded form.  The base64 encoded form uses printable ASCII
1 characters to represent binary data.  Synopses:
1 
1      base64 [OPTION]... [FILE]
1      base64 --decode [OPTION]... [FILE]
1 
1    The base64 encoding expands data to roughly 133% of the original.
1 The base32 encoding expands data to roughly 160% of the original.  The
1 format conforms to RFC 4648 (https://tools.ietf.org/search/rfc4648).
1 
11    The program accepts the following options.  Also see ⇒Common
 options.
1 
1 ‘-w COLS’
1 ‘--wrap=COLS’
1      During encoding, wrap lines after COLS characters.  This must be a
1      positive number.
1 
1      The default is to wrap after 76 characters.  Use the value 0 to
1      disable line wrapping altogether.
1 
1 ‘-d’
1 ‘--decode’
1      Change the mode of operation, from the default of encoding data, to
1      decoding data.  Input is expected to be base64 encoded data, and
1      the output will be the original data.
1 
1 ‘-i’
1 ‘--ignore-garbage’
1      When decoding, newlines are always accepted.  During decoding,
1      ignore unrecognized bytes, to permit distorted data to be decoded.
1 
1    An exit status of zero indicates success, and a nonzero value
1 indicates failure.
1