Update tutorial.md

[m4oc]

the parameter "-d" is lowercase

[owainlewis]

Thanks @m4oc. Would you mind signing the Oracle Contributor Agreement (CLA) and signing-off your commit so we can merge (see: CONTRIBUTING.md for details)?

The CLA can be found here https://www.oracle.com/technetwork/community/oca-486395.html

If you're comfortable doing that, let us know when it's submitted and we can merge your changes. If that's too much trouble I'd be happy to push a commit incorporating your changes. Obviously we'd love to get you as a contributor.

Let us know if you have any questions.

[owainlewis]

I believe there is a difference between OSX and Linux here. OSX using an uppercase flag and lowercase for Ubuntu etc.

[bweston92]

@owainlewis that is the case yes. However they both support --decode.

So it should be:

$ kubectl -n my-namespace get secret my-app-db-root-password -o jsonpath="{.data.password}" | base64 --decode

[owainlewis]

Opened #187 for cross OS compatibility fix.

[owainlewis]

Fixed in #187