base64 (command)

wikipedia:Base64 binary-to-text encoding https://linux.die.net/man/1/base64

• base64 (/usr/bin/base64) command is included in coreutils package
• Linux: base64 inputfile.txt [[>>]] output.txt
• macOS: base64 --input inputfile.txt --output output.txt
• base64 --decode

echo -n 'YOUR_TEST' | base64

base64 -w 0
base64 -D / base64 -d /  base64 --decode

echo 
'AAAAB3NzaC1yc2EAAAADAQABAAABAQDEbKq5U57fhzQ3SBbs3NVmgY2ouYZfPhc6cXBNEFpRT3T100fnbkYw+EHi76nwsp+uGxk08kh4GG881DrgotptrJj2dJxXpWp/SFdVu5S9fFU6l6dCTC9IBYYCCV8PvXbBZ3oDZyyyJT7/vXSaUdbk3x9MeNlYrgItm2KY6MdHYEg8R994Sspn1sE4Ydey5DfG/WNWVrzFCI0sWI3yj4zuCcUXFz9sEG8fIYikD9rNuohiMenWjkj6oLTwZGVW2q4wRL0051XBkmfnPD/H6gqOML9MbZQ8D6/+az0yF9oD61SkifhBNBRRNaIab/Np7XD61siR8zNMG/vCKjFGICnp' | base64 -D | md5
6530389635564f6464e8e3a47d593e19

kubectl get secret --namespace default grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo

base64 -d > certs/file.pfx
::-d --decode

base64
(no output)
[2]+  Stopped                 base64

Help

Mac

base64 --help
Usage:	base64 [-hvDd] [-b num] [-i in_file] [-o out_file]
  -h, --help     display this message
  -Dd, --decode   decodes input
  -b, --break    break encoded string into num character lines
  -i, --input    input file (default: "-" for stdin)
  -o, --output   output file (default: "-" for stdout)

Linux

base64 --help
Usage: base64 [OPTION]... [FILE]
Base64 encode or decode FILE, or standard input, to standard output.  

With no FILE, or when FILE is -, read standard input. 

Mandatory arguments to long options are mandatory for short options too.
  -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

The data are encoded as described for the base64 alphabet in RFC 4648.
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.
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
Full documentation <https://www.gnu.org/software/coreutils/base64>
or available locally via: info '(coreutils) base64 invocation'

Errors

root@5# base64 --input yourfile.txt --output yourfile.txt 
base64: unrecognized option '--input'
Try 'base64 --help' for more information.

Related

• openssl base64
• openssl rand -base64 24
• SAML
• pbcopy
• base64decode Terraform function
• kubectl describe secret
• Serialized

See also

• authorized_keys file for OpenSSH
• base64, base64 --decode, Serialized
• ASCII, Hexadecimal, base64, ASCII escape character, ANSI escape code, asciinema, ASCII Art