title: How can header value can be read from a file and pass in CURL request?
body: <p>How can header value can be read from a file and pass in CURL request ? </p>
  
  <p>My CURL request is:</p>
  
  <pre><code>curl -H "X-Auth-Token: &lt;token&gt;" http://a.b.c.d:9696/v2.0/subnets
  </code></pre>
  
  <p>The  here is of more than 1000 characters.</p>
  
  <p>Is there a way that 'token' can be stored in a file and then that can be directly used in curl request?</p>
  
  <p>I tried using '-K' and '-d' but didn't succeed.</p>