Base32 encode/decode data and print to standard output.
Syntax base32 [OPTION]... [FILE] Key -d --decode Decode data. -i --ignore-garbage When decoding, ignore non-alphabet characters. -w --wrap=COLS Wrap encoded lines after COLS character (default 76). Use 0 to disable line wrapping. --help Display this help and exit. --version Output version information and exit.
With no FILE, or when FILE is - , read from standard input.
Mandatory arguments to long options are mandatory for short options too.
The Base 32 encoding is designed to represent arbitrary sequences of octets in a form that needs to be case insensitive but that need not be human readable.
The base32 encoded data is about 60% larger than the raw data.
The data are encoded as described for the base64 alphabet in RFC 4648.
This uses an alphabet of A-Z, followed by 2-7.
0, 1, 8 and 9 are skipped due to the similarity with the letters O, I, B and G.
When fewer than 40 input bits are available in an input group, bits with value zero are added (on the right) to form an integral number of 5-bit groups. Padding at the end of the data is performed using the "=" character.
When decoding, the input may contain newlines in addition to the bytes of the formal base64 alphabet. Use --ignore-garbage to attempt to recover from any other non-alphabet bytes in the encoded stream.
Advantages of Base32:
One disdvantage of Base32 is that the resulting string is about 20% longer than Base64.
base32 is part of the coreutils (basic file, shell and text manipulation utilities) project.
Encode the text file sample.txt:
$ base32 sample.txt > encoded.txt
Encode a binary photo file:
$ base32 --wrap=0 picture.jpg > encoded.txt
Decode the file encoded.txt:
$ base32 encoded.txt > restore.txt
"The secret is that there is no secret." ~ Lionel Shriver, (We Need to Talk About Kevin)
Related linux commands:
base64 - Base64 encode/decode data and print to standard output.
uuencode - Encode a binary file.
ASCII Table - (128 codes)