title: turning a list into a table with presence/absence in bash
body: <p>I have the following list:</p>
  
  <pre><code>gene1 file1
  gene2 file2
  gene3 file3
  </code></pre>
  
  <p>to turn into the following presence/absence table</p>
  
  <pre><code>       gene1    gene2    gene3
  file1  +        -        -
  file2  -        +        -
  file3  -        -        +
  </code></pre>
  
  <p>is there some way in bash to do that?</p>