title: How are curl, git, or heroku able to run from the command line regardless of the current file path?
body: <p>How are they able to get git, curl, or heroku to run from anywhere. For example, just by runnning:</p>
  
  <pre><code>$curl
  </code></pre>
  
  <p>or </p>
  
  <pre><code>$git
  </code></pre>
  
  <p>or</p>
  
  <pre><code>$heroku
  </code></pre>