title: How to use "setenv" command in zsh shell?
body: <p>I tried to install OMNeT++ in my notebook (macOS Catalina 10.15). I had follow install guide from OMNeT++ official site. But this guide description below:</p>
  
  <blockquote>
    <p>OMNeT++ needs its bin/ and tools/macosx/bin directories to be in the path. To add them PATH temporarily (in the current shell only), change into the OMNeT++ directory and source the setenv script:</p>
  </blockquote>
  
  <pre><code>$ cd omnetpp-5.6.1
  $. setenv
  </code></pre>
  
  <p>I knew "setenv" command only use "csh".</p>
  
  <p>Can I change the default shell (zsh) to use the above command for the shell?</p>