title: Error: You must install at least one postgresql-client-<version> package
body: <p>I am trying to install PostgreSQL in Ubuntu.  </p>
  
  <p>I followed the instruction from:</p>
  
  <pre><code>/opt/PostgreSQL/9.0/doc/postgresql/html/installation.html 
  </code></pre>
  
  <p>and seem to have successfully installed PostgreSQL but as Post-Installation setup, it asked me to do the following:</p>
  
  <p>To do this, add the following to your shell start-up file, such as <code>~/.bash_profile</code> (or <code>/etc/profile</code>, if you want it to affect all users):</p>
  
  <pre><code>PATH=/usr/local/pgsql/bin:$PATH
  export PATH
  </code></pre>
  
  <p>but I have no idea where .bash_profile is. It said this is not required, so I just skipped it and when I was trying to create database (createdb mydb), it gives me  </p>
  
  <p>Error: </p>
  
  <pre><code>You must install at least one postgresql-client-&lt;version&gt; package.
  </code></pre>
  
  <p>I have no idea what that is. Could anyone explain why I am getting this error and how I can install postgresql-client?</p>