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Shell command: base64

base64 encodes and decodes data to/from Base64.

Encoding and decoding data on stdin:

$ echo hello world | base64
aGVsbG8gd29ybGQK

$ echo aGVsbG8gd29ybGQK  | base64 -d
hello world

Encoding and decoding data in a file:

$ echo hello world > /tmp/data
$ base64 /tmp/data
aGVsbG8gd29ybGQK

$ echo aGVsbG8gd29ybGQK > /tmp/data.64
$ base64 -d /tmp/data.64
hello world

See also