title: How to sort text file based on number after first letter
body: <p>I have a text file in linux that looks like this:</p>
  <pre><code>H-988   -0.5418829321861267 no
  H-989   -0.5033702254295349 yes
  H-990   -1.1516857147216797 hi
  H-99    -0.5005123019218445 hello
  </code></pre>
  <p>I want to sort this file based on the number coming after the hyphen. So the order should be:</p>
  <pre><code>H-99    -0.5005123019218445 hello
  H-988   -0.5418829321861267 no
  H-989   -0.5033702254295349 yes
  H-990   -1.1516857147216797 hi
  </code></pre>
  <p>I tried the grep <code>sort</code> command but it did not work. For example it puts 95 after 949 instead of before same goes for 99 and 990 as the example provided</p>