Why do I have 2 versions of psql, pg_dump and other tools?

Hello experts,

In Scientific Linux 6.3 (haven't tested this in CentOS), why do I have 2 versions of tools such as psql and pg_dump?:
[root@sl ~]# find / -name psql
/usr/bin/psql
/usr/pgsql-9.3/bin/psql

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My installation process boils down to these steps:
rpm -i http://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-sl93-9.3-1.noarch.rpm
yum install postgresql93-server postgresql93-contrib postgresql-contrib 
service postgresql-9.3 initdb

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So when I invoke the tools without an absolute path:

WARNING: psql version 8.4, server version 9.3.

And the most important question would be, how can I fix this in a cleanly manner? I see the following recommendation but its more like a workaround to me:

http://serverfault.com/questions/426480/pg-dump-not-working-do-i-need-to-change-order-of-path
LVL 20
José MéndezAsked:
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José MéndezConnect With a Mentor Author Commented:
Its the postgresql-contrib package the one that introduces the duplicate tools!!! I am trying to figure out now why that one is needed.
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José MéndezAuthor Commented:
Ok I just added this line to the end of my .bashrc :

export PATH=/usr/pgsql-9.3/bin:$PATH

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Would still want some input about this method of fixing it, and if someone could please help me understand why are there 2 versions of the tools, that would be awesome.

Thanks,
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earth man2Commented:
IThought you use
rpm -U
to update an installation else you risk a double install.
You can use rpm to uninZstall a package.  Sorry I don't have experience of this flavour of Linux.  I use Fedora.
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José MéndezAuthor Commented:
the rpm line is meant to install the repo =S, but I get your point, if the software is already there, instead of installing, I'll need to figure out how to update the tools from this new repo I added. Not sure why since the yum command is not specific for the tools
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earth man2Commented:
to relocate default ie default package dir is in conflict with your current install you could try

rpm -i --relocate /usr/pgsql-9.3/bin=/usr/bin packagename.rpm

yum --installroot=<path> install <package>

These tools have a verbose / dry run mode so you can see what files will be acted upon.
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gheistCommented:
You must run correct client to get rid of the warning
Since you installed from postgresql.org rpm, the system included psql is obsolete.
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Jack FrostCommented:
You may not have two versions.  You might want to check using ls -l and see if the entry in /usr/bin is a symlink to the actual program.  Many entries in /usr/bin are like that.  It gives you version independent access that survives through updates.
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gheistCommented:
You can have at least 4 versions.... All supported and running at once... (SCL, postgresql.org and one in system)
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gheistCommented:
If you post output of "rpm -qa | grep postg" and somebody might be able to help... Otherwise close the question.
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José MéndezAuthor Commented:
Here are the correct steps to install, taken from www.postgresql.org/download/linux/redhat/, from which I got errors back in like 2012 or something (for Scientific Linux):

yum install http://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-sl93-9.3-1.noarch.rpm
yum install postgresql93.x86_64 postgresql93-contrib.x86_64

Now I have
# psql -V
psql (PostgreSQL) 9.3.4

x)

Thanks all!!

P:S.: Gheist you posted 3 times in this thread, none of which had ANY sense. Whats with the power trip telling people to close out their questions if your demands are not met?? LOL
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