title: Executing a command in a KornShell script
body: <p>If you are passed in an argument in a KornShell script, and it's also a command like:</p>
  
  <pre><code>    ksh argument.ksh "wc -l"
  </code></pre>
  
  <p>how would you execute this command inside the script?  Do you store it in a variable, and then execute it?  Also, is there a way to retrieve the standard output/standard error from executing the command inside the script?</p>