<p>The tilde means home directory so you just have to edit the file called <code>.profile</code> in your home directory and enter the  PATH definition from either <code>.bashrc</code> or <code>.bash_profile</code> also in home.</p>
<p>In any case, if you don't wish to edit these files, as a temporary workaround, you can open the terminal app, type</p>
<pre><code>bash
</code></pre>
<p>to be sure you use bash (Catalina switched the default shell to zsh) and then type</p>
<pre><code>/Applications/Geany.app/Contents/MacOS/geany
</code></pre>
<p>The executed Geany should be able to execute the fortran compiler.</p>
<p>Being able to specify which shell to use for executing compilers would be the right solution but it will have to wait until the next Geany release.</p>

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