title: How to regex a string - length 8, first character letter and remaining numeric
body: <p>I am trying to create a RegEx to match a string with the following criterion </p>
  
  <ul>
  <li>Length 8</li>
  <li>First character must be a letter a-z or A-Z</li>
  <li>The remaining 7 must be numeric 0-9</li>
  </ul>
  
  <p>examples</p>
  
  <ul>
  <li>a5554444</li>
  <li>B9999999</li>
  <li>c0999999</li>
  </ul>
  
  <p>This is what I have so far</p>
  
  <pre><code>^[0-9]{8}$
  </code></pre>
  
  <p>What am I missing to check the first character? I tried </p>
  
  <pre><code>^[a-zA-Z][0-9]{8}$
  </code></pre>
  
  <p>but that's not working.</p>