One could be bitten by having unexpected newline characters in base64 encoded secrets (reference: https://github.com/kubernetes/kubernetes/issues/23404).
Calling `echo -n` will omit the trailing newline character.
`
The echo utility writes any specified operands, separated by single blank (` ') characters and followed by
a newline (`\n') character, to the standard output.
The following option is available:
-n Do not print the trailing newline character. This may also be achieved by appending `\c' to the end
of the string, as is done by iBCS2 compatible systems. Note that this option as well as the effect
of `\c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.
Applications aiming for maximum portability are strongly encouraged to use printf(1) to suppress the
newline character.
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Joonathan Mägi
5c9d6060f3