when one issues
some_command -p password
the password will be shown by ps and probably in other places, like
/proc.
1. What is the full list of places where the password will be shown?
2. How to hide it?
2.1 I googled a bit and saw 2 main methods:
2.1.1 By using a here document:
some_command <<EOF
-p password
EOF
Will this method hide the password completely? That is, will it be
hidden from all the places that were mentioned in section 1 above?
2.1.2 By making the command line long enough so that the password will
be effectively hidden from ps. I didn't like that method.
2.1.3 Anything else?
2.2 When the source for command is under control, what is the best way
to hide the password while still being able to read it in the
command line?
2.2.1 A method which slightly deviates from the requirement is to make
the program able to read parameters from a file. Beside the need
to handle this file, what are the drawbacks?
2.2.2 What about
printf "-p password" | some_command -
?
2.2.3 Anything else?
--
"If you have an apple and I have an apple and we exchange apples then
you and I will still each have one apple. But if you have an idea and I
have an idea and we exchange these ideas, then each of us will have two
ideas." -- George Bernard Shaw (sent by shaulk @ actcom . net . il)
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