base64 - base64 encode/decode data and print to standard output

Options you will use

-d, --decode

decode data

-w, --wrap=COLS

wrap encoded lines after COLS characters (default 76); 0 disables wrapping

Examples

$ kubectl get secret db -o jsonpath='{.data.password}' | base64 -d

read a Secret value - base64 is an encoding, not encryption

$ echo -n s3cret | base64

encode WITHOUT a trailing newline (-n) - a classic Secret bug

Gotchas

• echo without -n adds a newline, which becomes part of the encoded value.