how do i do this with pgp?

[Derek Atkins]

Clearly you have not read the application note in the documentation
that came with PGP.  The appnote clearly states:

>         There is a better way of doing this in PGP 2.2, which is an
> environment variable called "PGPPASSFD".  If this is set, it means
> that the FIRST thing PGP will do is read the pass phrase from this
> file descriptor.  So, for example, one can set PGPPASSFD to "0"
> (zero), and then PGP will read the pass phrase from stdin as the first
> thing.

-derek

         Derek Atkins, SB '93 MIT EE, G MIT Media Laboratory
       Member, MIT Student Information Processing Board (SIPB)
    Home page: http://www.mit.edu:8001/people/warlord/home_page.html
       warlord at MIT.EDU    PP-ASEL     N1NWH    PGP key available