decode base64: invalid input

Question

Trying to decode base64 file on GNU/Linux, I get \"base64: invalid input\".

$ base64 test.zip | base64 -d > test2.zip
base64: invalid input
$ ll test*
-rw-r--         


        

Answer 1

You can also try using

echo -n

to suppress new lines and padding the input length to a multiple of 4 with one to three equal characters

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