Re: Changing users in a bash shell.

[Jason Tishler <jason at tishler dot net>]

Matthew,

On Thu, Jun 12, 2003 at 01:08:55PM -0700, Matthew Rudolph wrote:
> In the postgres.x.x.x.README there is the following:
> ->The "$" prompt indicates running as the "postgres" user. 
>   Log in as "postgres" or use ssh to emulate Unix's "su" command.
> 
> Can you point me to something that explains how to do this?

I know of three ways to do this:

    1. Log out and log back in as postgres. [1]
    2. Set up sshd and then execute "ssh postgres@localhost". [2]
    3. Use Fast User Switching to switch user to postgres. [1] [3]

Notes:

    [1] Obviously cannot be scripted
    [2] Can be scripted but assumes that sshd is set up.
    [3] Only available on XP and later.

> The problem I am trying to solve is an install. I trying to automate
> the installation of postgresql onto winXP machines. As part of the
> install I want to be able to 'su' to user postgres and run the initdb
> command (and a few others) but I am not sure what is necessary to
> make that happen and I have not been able to find any document like
> 'How to switch users for dummies on windows'.

AFAICT, there is no completely general way to script a Cygwin PostgreSQL
installation (unless one assumes sshd is set up).  This is why the
PostgreSQL does not contain an installation script like some of the
other packages.

Jason

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