title: concatenate a string to the end of every output line in bash/csh
body: <p>In bash command line, if I run "find . -name 'abc*' ", it prints out a list of filenames like</p>
  
  <pre><code>abc1
  abc2
  abc3
  </code></pre>
  
  <p>How can I pipe it with echo or other command, so that i get this output:</p>
  
  <pre><code>abc1   ok
  abc2   ok
  abc3   ok
  </code></pre>