base64 (command)

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

• base64 command is included in coreutils package
• /usr/bin/base64
• 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

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)

Errors

root@5# base64 --input kk13.txt --output kk13.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