basenc - phpMan

File: coreutils.info,  Node: basenc invocation,  Prev: base64 invocation,  Up: Output of entire files

3.7 'basenc': Transform data into printable data
================================================

'basenc' transforms data read from a file, or standard input, into (or
from) various common encoding forms.  The encoded form uses printable
ASCII characters to represent binary data.

   Synopses:

     basenc ENCODING [OPTION]... [FILE]
     basenc ENCODING --decode [OPTION]... [FILE]

   The ENCODING argument is required.  If FILE is omitted, reads input
from stdin.  The '-w/--wrap','-i/--ignore-garbage', '-d/--decode'
options of this command are precisely the same as for 'base64'.  *Note
base64 invocation::.

   Supported ENCODINGs are:

'--base64'
     Encode into (or decode from with '-d/--decode') base64 form.  The
     format conforms to RFC 4648#4
     (https://tools.ietf.org/search/rfc4648#section-4).  Equivalent to
     the 'base64' command.

'--base64url'
     Encode into (or decode from with '-d/--decode') file-and-url-safe
     base64 form (using '_' and '-' instead of '+' and '/').  The format
     conforms to RFC 4648#5
     (https://tools.ietf.org/search/rfc4648#section-5).

'--base32'
     Encode into (or decode from with '-d/--decode') base32 form.  The
     encoded data uses the 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567='
     characters.  The format conforms to RFC 4648#6
     (https://tools.ietf.org/search/rfc4648#section-6).  Equivalent to
     the 'base32' command.

'--base32hex'
     Encode into (or decode from with '-d/--decode') Extended Hex
     Alphabet base32 form.  The encoded data uses the
     '0123456789ABCDEFGHIJKLMNOPQRSTUV=' characters.  The format
     conforms to RFC 4648#7
     (https://tools.ietf.org/search/rfc4648#section-7).

'--base16'
     Encode into (or decode from with '-d/--decode') base16
     (hexadecimal) form.  The encoded data uses the '0123456789ABCDEF'
     characters.  The format conforms to RFC 4648#8
     (https://tools.ietf.org/search/rfc4648#section-8).

'--base2lsbf'
     Encode into (or decode from with '-d/--decode') binary string form
     ('0' and '1') with the _least_ significant bit of every byte first.

'--base2msbf'
     Encode into (or decode from with '-d/--decode') binary string form
     ('0' and '1') with the _most_ significant bit of every byte first.

'--z85'
     Encode into (or decode from with '-d/--decode') Z85 form (a
     modified Ascii85 form).  The encoded data uses the
     '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTU VWXYZ.-:+=^!/*?&<>()[]{}@%$#'.
     characters.  The format conforms to ZeroMQ spec:32/Z85
     (https://rfc.zeromq.org/spec:32/Z85/).

     When encoding with '--z85', input length must be a multiple of 4;
     when decoding with '--z85', input length must be a multiple of 5.

   Encoding/decoding examples:

     $ printf '\376\117\202' | basenc --base64
     /k+C

     $ printf '\376\117\202' | basenc --base64url
     _k-C

     $ printf '\376\117\202' | basenc --base32
     7ZHYE===

     $ printf '\376\117\202' | basenc --base32hex
     VP7O4===

     $ printf '\376\117\202' | basenc --base16
     FE4F82

     $ printf '\376\117\202' | basenc --base2lsbf
     011111111111001001000001

     $ printf '\376\117\202' | basenc --base2msbf
     111111100100111110000010

     $ printf '\376\117\202\000' | basenc --z85
     @.FaC

     $ printf 01010100 | basenc --base2msbf --decode
     T

     $ printf 01010100 | basenc --base2lsbf --decode
     *

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