title: Ubuntu: Environment variable is deleted after closing session
body: <p>I am setting an environment variable in <code>Ubuntu 14.04</code> for a script to use it.</p>
  
  <p>I opened the terminal and did:</p>
  
  <pre><code>export VARNAME=/home/me/folder/folder2
  </code></pre>
  
  <p>And then run the script and everything works fine. But anyway as soon as I close my session, the variable seems to disappear and I have to declare it again like the first time.</p>