title: Rake, bundle, rails command not found on rvm
body: <p>I just installed rvm + rails 3+ on centos 6.0 at Rackspace cloud server. Everything works fine, but sometimes when i ssh to server i can't use rake, bundle or any other rails related commands it always shows me errors like:</p>
  
  <pre><code>bash: rake: command not found
  </code></pre>
  
  <p>when i try to run bundle install it shows me this error:</p>
  
  <pre><code>ERROR: Gem bundler is not installed, run `gem install bundler` first.
  </code></pre>
  
  <p>but i do have it installed for sure and it worked before.I can use <code>rvm rake db:migrate</code> - but it used to without rvm prefix...Please help i dont know why is that happening - maybe something wrong with bash profile...</p>