Changing users in a bash shell.

[Igor Pechtchanski]

On Fri, 13 Jun 2003, Jason Tishler wrote:

> 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.

Umm, Jason, what about 4. Use RunAs?  It's available on at least Win2k,
and maybe even on WinNT...
	Igor

> > 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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