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This section discusses how to set up
your own environment so that you can use frontend
applications. We assume Postgres has already been
successfully installed and started; refer to the Administrator's Guide
and the installation notes
for how to install Postgres.
Postgres is a client/server application. As a user,
you only need access to the client portions of the installation (an example
of a client application is the interactive monitor psql).
For simplicity,
we will assume that Postgres has been installed in the
directory /usr/local/pgsql. Therefore, wherever
you see the directory /usr/local/pgsql you should
substitute the name of the directory where Postgres is
actually installed.
All Postgres commands are installed in the directory
/usr/local/pgsql/bin. Therefore, you should add
this directory to your shell command path. If you use
a variant of the Berkeley C shell, such as csh or tcsh,
you would add
set path = ( /usr/local/pgsql/bin path )
in the .login file in your home directory. If you use
a variant of the Bourne shell, such as sh, ksh, or
bash, then you would add
$ PATH=/usr/local/pgsql/bin:$PATH
$ export PATH
to the .profile file in your home directory.
From now on, we will assume that you have added the
Postgres bin directory to your path. In addition, we
will make frequent reference to "setting a shell
variable" or "setting an environment variable" throughout
this document. If you did not fully understand the
last paragraph on modifying your search path, you
should consult the Unix manual pages that describe your
shell before going any further.
If your site administrator has not set things up in the
default way, you may have some more work to do. For example, if the database
server machine is a remote machine, you
will need to set the PGHOST environment variable to the name
of the database server machine. The environment variable
PGPORT may also have to be set. The bottom line is this: if
you try to start an application program and it complains
that it cannot connect to the postmaster,
you should immediately consult your site administrator to make sure that your
environment is properly set up.
