title: Use powershell/7za.exe to extract multiple zip files?
body: <p>The following code </p>
  
  <pre><code>ls *.zip | % { c:\bin\7za.exe e $_ -o..\..\unzipped }
  ls *.zip | % { c:\bin\7za.exe e $_.name -o..\..\unzipped }
  </code></pre>
  
  <p>got the following error messages. Is it powershell calling exe file convention issue?</p>
  
  <pre>
  Error:
  Incorrect command line
  
  Error:
  Incorrect command line
  
  Error:
  Incorrect command line
  ....
  </pre>