<p>Just to let you know (probably you know it already): updating the shell from "bash" to "zsh" does not change the practical result, in that fortran keeps on being "not found" (a colleague of mine tried it today).</p>
<p>By the way, this is the Terminal of a MacBook Air after Catalina.</p>
<p><a target="_blank" rel="noopener noreferrer" href="https://user-images.githubusercontent.com/54480358/66912818-9c5e9580-f013-11e9-88ed-3b7229517523.jpg"><img src="https://user-images.githubusercontent.com/54480358/66912818-9c5e9580-f013-11e9-88ed-3b7229517523.jpg" alt="Screenshot 2019-10-16 at 12 39 53" style="max-width:100%;"></a></p>
<p>this is the link suggested by Apple with info concerning the shift from "bash" to "zsh":</p>
<p><a href="https://support.apple.com/en-us/HT208050" rel="nofollow">https://support.apple.com/en-us/HT208050</a></p>
<p>Have a nice day</p>

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