title: linux PATH not working
body: <p>I dont know why rbenv command do not work.. T^T<br>
  only work when 'cd /usr/local/.rbenv/bin &amp;&amp; ./rbenv'</p>
  
  <pre><code>myggul@ubuntu:~$ echo $PATH
  /usr/local/java/bin:/usr/local/.rbenv/bin;/home/myggul/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  
  myggul@ubuntu:~$ cd /usr/local/.rbenv/bin
  
  myggul@ubuntu:/usr/local/.rbenv/bin$ ll
  total 12
  drwxrwxr-x 2 myggul myggul 4096 Jul 16 16:11 ./
  drwxr-xr-x 7 myggul myggul 4096 Jul 16 16:11 ../
  lrwxrwxrwx 1 myggul myggul   16 Jul 16 16:11 rbenv -&gt; ../libexec/rbenv*
  -rwxrwxr-x 1 myggul myggul  724 Jul 16 16:11 ruby-local-exec*
  
  myggul@ubuntu:/usr/local/.rbenv/bin$ rbenv
  The program 'rbenv' is currently not installed.  You can install it by typing:
  sudo apt-get install rbenv
  
  myggul@ubuntu:/usr/local/.rbenv/bin$ cd ~
  
  myggul@ubuntu:~$ rbenv
  The program 'rbenv' is currently not installed.  You can install it by typing:
  sudo apt-get install rbenv
  </code></pre>