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felix zaslavskiy <felix@students.poly.edu> wrote:

> #chmod a-rw /dev/tty
> su unprivuser
> bash$ echo -n $'oldpass\nmypassword\nmypassword\n' | passwd

You never pass sensitive data as an argument to a command nor do
you put it into an enviroment variable. Use the `here-document`
feature of your shell.

-- 
Christian

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