title: SED command not working in perl script
body: <p>When i am using  "sed" in command line it is working but not when included in perl script. </p>
  
  <p>An example is   <strong>sed 's/\s+//g' aaa > bbb</strong>     </p>
  
  <p>but say when i am trying to call the same command through perl script  </p>
  
  <pre><code>$gf = `sed 's/\s\+//g' aaa &gt; bbb` ;
  </code></pre>
  
  <p>the output file remains same as the input file!!!! Please suggest. </p>