title: how do I add a path to a file in this .bashrc file
body: <p>I have this .bashrc file</p>
  
  <pre><code>#PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting
  
  [[ -s "$HOME/.rvm/scripts/rvm" ]] &amp;&amp; \. "$HOME/.rvm/scripts/rvm" 
  export PS1="\u @\w &gt;"
  
  #redefine a command to add options
  alias mv='mv -i'
  alias cp='cp -i'
  alias rm='rm -i'
  alias df='df -h'
  alias du='du -h'
  alias mkdir='mkdir -p'
  alias ls='ls -lahG'
  export LESS='-N'
  </code></pre>
  
  <p>I have this .bash_login file </p>
  
  <pre><code>[[ -s "$HOME/.rvm/scripts/rvm" ]] &amp;&amp; source "$HOME/.rvm/scripts/rvm" # Load RVM into a     shell session *as a function*
  </code></pre>
  
  <p>I have this .bash_profile file </p>
  
  <pre><code>#This file only runs when user first logs in
  
  #[[ -s "$HOME/.rvm/scripts/rvm" ]] &amp;&amp; \. "$HOME/.rvm/scripts/rvm" 
  #export PS1="\u @\w &gt;"
  
  if [ -f ~/.bashrc ]; then
      source ~/.bashrc
  fi
  </code></pre>
  
  <p>I want to add this path to my $PATH variable so that the system can locate the program.</p>
  
  <pre><code>/Library/PostgreSQL/9.1/bin/
  </code></pre>
  
  <p>Which file should I add this to?</p>
  
  <p>Thanks</p>