Expect and scripting.

Does anyone have an example of an expect script that could work. For some reason either I am not understanding something about this or My script is just wrong but my pg_sump script does not work with expect. 

I have all my databases password protected hence a need for doing this for backup.

Currently this is what I am doing

spawn /usr/bin/pg_dump -U myusername -b -c -F c -f /backup/databasename_sql databasename
expect Password:
send "the_password\r"

any tips or suggestions would be appreciated.

thanks in advance.

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Eric Naujock  CCNA, CCDA, A+, Network +, I-Net +
Abacus II
5610 Monroe St.
Sylvania, Ohio 43560
<http://www.abacusii.com>
E-mail - naujocke@abacusii.com
Phone - 419-885-0082  X 241
Fax : 419-885-2717
AOL IM: erlic