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After upgrading to Catalina and encountering the zsh upgrade reminder when launching Terminal, I've decided to switch to zsh.

The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.

However, I'm having trouble getting Terminal/zsh to recognize the .zshrc startup file located in my home folder. ~/zshrc isn't loaded on launch, and executing source ~/.zshrc returns source: no such file or directory.

The file only contains one line, an alias tying python to python3.

Finder showing .zshrc presence next to an open TextEdit window of the file Terminal showing the lack of any aliases and the failed source command

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4 Answers 4

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The issue turned out to be that .zshrc had a hidden .txt file extension. Somehow it was automatically named .zshrc.txt, probably when I used TextEdit to edit it, and source doesn't infer the text extension. Finder also doesn't display the .txt extension by default unless you inspect the file, so I hadn't noticed the issue.

enter image description here

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Somewhat similarly, my terminal/zsh wasn't recognizing my .zshrc file also, so running source ~/.zshrc helped me find that my zshrc file was formatted improperly (it contained spaces before/after an equals symbol in alias g="git").

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I had a similar problem to @chinookf. My .zshenv had a typo in the declaration of a function, which was causing both .zshenv and .zshrc to not load properly. As simple as removing a space in the function declaration and everything went back to normal.

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In my case, the thing was hidden in the line To update your account to use zsh, please run chsh -s /bin/zsh.

As I understood, the problem is in fact, that for any reason zsh was not a default shell interpreter in the system after a fresh update to macOS Sonoma. After execution of chsh -s /bin/zsh - the issue with "ignored" .zshrc disappeared.

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