title: macOS 10.15 Terminal - unlink gets "Operation not permitted"
body: <p>zsh; Terminal has Full Disk Access permission in System Preferences.</p>
  <pre><code>/usr/bin % ls -alF python
  lrwxr-xr-x  1 root  wheel  75 Jul 12 11:48 python@ -&gt; ../../System/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7
  /usr/bin % sudo unlink python
  Password:
  unlink: python: Operation not permitted
  /usr/bin % 
  </code></pre>
  <p>EDIT by OP to add this terminal transcript:</p>
  <pre><code>~ % whence python
  /usr/bin/python
  ~ % echo $PATH
  /usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/brec/.rvm/bin
  ~ % ls -alF /usr/local/bin/python
  lrwxr-xr-x  1 brec  admin  24 Dec 11 10:45 /usr/local/bin/python@ -&gt; /usr/local/bin/python3.8
  ~ % python
  
  WARNING: Python 2.7 is not recommended.
  </code></pre>
  <p>NOTE: /usr/local/bin/python3.8 does not exist.</p>