Re: How to tell what OS PostgreSQL is installed on.

Scott,

\o /tmp/foo  This look like a psql thing only.  I cannot do this via JDBC.
I guess the only solution is to use "select version()"  and in combination
with select spclocation on pg_tablespace where spclocation is not null;

The only problem is, if a user do not create any tablespace which I assume
one would always do in production.  Then this spclocation column will
always be NULL by default.  Once a tablespace is created, then I can get a
value on the spclocation and parse that to determine if it is Windows or
Unix/Linux.

Thanks,
Louis.


-----Original Message-----
From: Scott Whitney [mailto:swhitney@journyx.com]
Sent: Thursday, October 08, 2009 5:50 PM
To: 'Scott Whitney'; 'Louis Lam'; pgsql-admin@postgresql.org
Subject: RE: [ADMIN] How to tell what OS PostgreSQL is installed on.

One more clever one:

\o /tmp/foo will fail on Windows with a "No such file or directory"

Any Unix system will give you access to /tmp for writing. If you can't
open
a stream for output to /tmp, you're on a file system that has no /tmp, aka
Windows

-----Original Message-----
From: pgsql-admin-owner@postgresql.org
[mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Scott Whitney
Sent: Thursday, October 08, 2009 4:11 PM
To: 'Louis Lam'; pgsql-admin@postgresql.org
Subject: Re: [ADMIN] How to tell what OS PostgreSQL is installed on.

Visual C++ is Microsoft's compiler for C++. If something is compiled with
Visual C++, it was COMPILED on Windows. There is a 99.9% chance that the
underlying machine is also Windows (unless you're talking about a VM, but,
still, the OS on which PG itself is running is, in fact, Windows).

To the best of my knowledge, there is no way, within the PG interpreter to
determine what version of Windows you're on, however.



-----Original Message-----
From: pgsql-admin-owner@postgresql.org
[mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Louis Lam
Sent: Thursday, October 08, 2009 3:59 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] How to tell what OS PostgreSQL is installed on.

Hi,



I have a need to find out what OS PostgreSQL is running under.  I need to
be
able to query the database or send a command and  figure it out.  I also
do
not have super user permission to do this.  All I want to know is if the
PostgreSQL I am connected to is running from Windows or Non Windows.



I could do "Show data_directory" and parse the result, but this require
superuser permission.



I tried select version() also.  Under Windows OS, I got this:



version

 ---------------------------------------------------

 PostgreSQL 8.3.6, compiled by Visual C++ build 1400



Does anyone know if Visual C++ is use to only compile PostgreSQL for
Windows?  Or can other compiler be use?  If Visual C++ is always use for
Windows and Windows only then this is very good information I can use.



I know on RedHat, I got this.



version



--------------------------------------------------------------------------
--
--------------------------

 PostgreSQL 8.3.7 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC)
3.4.6
20060404 (Red Hat 3.4.6-10)



And on Solaris I got this.



-----------------

 PostgreSQL 8.1.11 on sparc-sun-solaris2.10, compiled by
/ws/on10-tools/SUNWspro/SOS8/bin/cc -Xa

(1 row)





Thank you all in advance for your help.

Louis Lam





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