title: Starting expo project failed: ps and grep commands not found
body: <p>I tried running my expo project for the first time on a new M1 Pro mac. I obtained the following error logs. For context, I am using the fish shell. What is wrong? Are ps and grep obtained through some package(s)?</p>
  <pre><code>bananas@MacBook-Pro ~/E/myproject [254]&gt; expo start
  WARNING: expo-cli has not yet been tested against Node.js v17.0.1.
  If you encounter any issues, please report them to https://github.com/expo/expo-cli/issues
  
  expo-cli supports following Node.js versions:
  * &gt;=12.13.0 &lt;13.0.0 (Maintenance LTS)
  * &gt;=14.0.0 &lt;15.0.0 (Active LTS)
  * &gt;=15.0.0 &lt;17.0.0 (Current Release)
  
  Starting project at /Users/williama/Experiments/prpool
  Developer tools running on http://localhost:19002
  Opening developer tools in the browser...
  /bin/sh: ps: command not found
  /bin/sh: grep: command not found
  /bin/sh: ps: command not found
  /bin/sh: grep: command not found
  /bin/sh: ps: command not found
  /bin/sh: grep: command not found
  /bin/sh: ps: command not found
  /bin/sh: grep: command not found
  /bin/sh: ps: command not found
  /bin/sh: grep: command not found
  /bin/sh: ps: command not found
  /bin/sh: grep: command not found
  Error: spawn open ENOENT
      at Process.ChildProcess._handle.onexit (node:internal/child_process:282:19)
      at onErrorNT (node:internal/child_process:475:16)
      at processTicksAndRejections (node:internal/process/task_queues:83:21)
  </code></pre>