title: Delete everyting preceding and including a certain substring from variable
body: <p>In Bash, how can I delete characters from a variable until a certain substring?</p>
  <p>Example:</p>
  <pre><code>ananas1kiwi2apple1banana2tree
  </code></pre>
  <p>shall look like this:</p>
  <pre><code>apple1banana2tree
  </code></pre>
  <p>The substring in this case is <code>2</code>.</p>