title: sed edit file in place
body: <p>I am trying to find out if it is possible to edit a file in a single sed command without <em><strong>manually</strong></em> streaming the edited content into a new file and then renaming the new file to the original file name.</p>
  <p>I tried the <code>-i</code> option but my Solaris system said that <code>-i</code> is an illegal option.  Is there a different way?</p>