title: How to display the first line for a set of files(say like 10) in unix?
body: <p>I don't know how to do that guys.I know only how to get first line for an individual file.</p>
  
  <p>First i listed only the files that has ssa as a part of its name.I used the command</p>
  
  <pre><code>ls | grep ssa
  </code></pre>
  
  <p>This command gives me 10 files now i want to display only the first lines for all 10 files.I don't know how to do that.Can anyone help me with that?</p>