title: Suppress Windows command output when using 'ExecWait' in NSIS
body: <p>I am trying to suppress the output window which pops up after executing a psql command in NSIS</p>
  
  <pre><code>ExecWait 'psql -U postgres -f "Path\To\File.sql" postgres'
  </code></pre>
  
  <p>I tried    '>nul' after looking at this <a href="https://stackoverflow.com/questions/11463544/how-to-suppress-windows-command-output">link</a>. But that doesn't work.</p>