@Craig Ringer, I am afraid I didn't understand your solution.
The scenario I am having is a system which has only user as root. I have
all the permissions and privileges of the system as the user is root. But
pgsql doesn't allow initdb to be executed by root.
I think the solution you proposed gives root permissions for a non-root
But I believe, I am looking forward for the exact opposite of it. In other
words, a possible work around for a root user to execute certain
executable(s) as an unprivileged user.
Please clarify if I am wrong in my understanding.

On Sun, Jun 15, 2014 at 9:49 PM, Craig Ringer <cr...@2ndquadrant.com> wrote:

> On 06/13/2014 07:08 AM, Shreesha wrote:
> > I need to initialize the db as the root and start the database server
> Assuming there's no way around doing this (it's generally not a good
> idea), you can just use the simple program 'fakeroot'.
> This program changes the return values from system calls via LD_PRELOAD,
> so PostgreSQL thinks that the user it is running as isn't root. It's
> commonly used in testing and packaging systems.
> http://man.he.net/man1/fakeroot
> --
>  Craig Ringer                   http://www.2ndQuadrant.com/
>  PostgreSQL Development, 24x7 Support, Training & Services


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