Create database without entering password at command line

Nathan Thatcher wrote:

I am trying to automatically create a database right after installing
postgres. I launch the silent install (Windows) from my own executable
and once it is done I need to create a database, tables, etc. I am
trying to find a way to do this without having to explicitly enter the
password in at the command prompt. What is the best way to do this?

You could use a pgpass file:

http://www.postgresql.org/docs/current/static/libpq-pgpass.html

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