How to set my default shell on Mac?

1. sudo nano /etc/shells

2. add /usr/local/bin/fish to your list of shells

3. chsh -s /usr/local/bin/fish

You can use chsh to change a user's shell.

Run the following code, for instance, to change your shell to Zsh

chsh -s /bin/zsh

As described in the manpage, and by Lorin, if the shell is not known by the OS, you have to add it to its known list: /etc/shells.

From Terminal:

1. Add Fish to /etc/shells, which will require an administrative password:

   sudo echo /usr/local/bin/fish >> /etc/shells
   

2. Make Fish your default shell with chsh:

   chsh -s /usr/local/bin/fish
   

---

From System Preferences:

1. User and Groups → ctrl-click on Current User → Advanced Options...

2. Change Login shell to /usr/local/bin/fish

   

3. Press OK, log out and in again