Github user aledsage commented on the pull request:
https://github.com/apache/incubator-brooklyn/pull/112#issuecomment-51587152
Thanks @sjcorbett - great comments. Was not sure about the automation
case. A `--password` is bad practice because it is visible to anyone doing
`ps`, and ends up in bash history etc. Reading from stdin is a little less bad.
A great discussion of this at http://stackoverflow.com/a/715681/1393883.
I'll add support for stdin to help user "circumvent 35 years of Unix
security"!
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