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Install fish shell on macOS Mojave with brew

Installing Fish shell on MacOS (Intel and M1) using brew

Fish is a smart and user-friendly command line (like bash or zsh). This is how you can instal Fish on MacOS and make your default shell.

Note that you need the https://brew.sh/ package manager installed on your machine.

Install Fish

brew install fish

More info: https://fishshell.com/docs/current/tutorial.html#tut_path

Check the path

Check the fish path with which fish . In the examples below it was located at: /opt/homebrew/bin/fish On older Macs default path is /usr/local/bin/fish, replace accordingly in the instruction below.

Make fish the default

  1. check the fish path with which fish. In the examples below it was located at: /opt/homebrew/bin/fish. On older Macs the path might differ.
  2. Add fish to the know shells run the command: sudo sh -c 'echo /opt/homebrew/bin/fish >> /etc/shells'
  3. Restart your terminal
  4. Set fish as the default shell run the command: chsh -s /opt/homebrew/bin/fish
  5. Restart your terminal and check if it launched with fish or not
  6. Add brew binaries in fish path run the command: fish_add_path /opt/homebrew/bin

Optionnal Configurations

Auto Completions

To collect command completions for all commands run:

fish_update_completions

Edit config.sh

I edited the ~/.config/fish/config.fish to have my terminal in english

set -x LANG en_US.UTF-8

Configure your shell

You can configure your shell by launching the web interface, run:

fish_config

Related documentation

@alexleeca
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You save my day, thx!

@victorhooi
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@dinko-pehar Awesome - this worked for me, for adding the Homebrew BIN path to my fish shell:

fish_add_path /opt/homebrew/bin

Is there also a current recommended command to setup command completions for fish/brew?

@dinkopehar
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@victorhooi You can just use:

fish_update_completions

to collect command completions for all commands. Some are also collected from automatically when you install some package via brew because it provides fish completions.


You can read my blog how I set up Fish shell and converted ZSH config to Fish at https://pehar.dev/blog/from-zsh-to-fish/

@gagarine
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Author

gagarine commented Oct 4, 2022

The doc was updated from the suggestions in the various comments. Thanks to all!

@Nepoxx the fish installed with brew add /opt/homebrew/share/fish/vendor_completions.d for completion (if not, it's a bug that need to be reported to brew)

@alper
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alper commented Feb 1, 2023

I'm setting up a new mac and confused about whether I used omf or fisher. Is this settled now?

@ahoho
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ahoho commented Feb 12, 2023

Shouldn't we also have the following in ~/.config/fish/config.fish?

if status is-interactive
    eval "$(brew shellenv)"
end

@phromaj
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phromaj commented Feb 13, 2023

Hi everyone, I get this error when I set fish as my default shell.

error: can not save history
warning-path: Unable to locate data directory derived from $HOME: '/Users/user/.local/share/fish'.
warning-path: The error was 'Permission denied'.
warning-path: Please set $HOME to a directory where you have write access.

Does anyone know why?

Thanks

EDIT  : fixed the problem, don't know why but ~/.local was created by root, so I deleted it and created again with my $USER

@antonengelhardt
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@phromaj I get that too:

Last login: Mon Feb 13 08:51:19 on ttys015
error: can not save universal variables or functions
warning-path: Unable to locate config directory derived from $HOME: '/Users/antonengelhardt/.config/fish'.
warning-path: The error was 'File exists'.
warning-path: Please set $HOME to a directory where you have write access.

mkdir: /completions: Read-only file system
mkdir: /conf.d: Read-only file system
mkdir: /functions: Read-only file system
warning: An error occurred while redirecting file '/config.fish'
open: Read-only file system
Welcome to fish, the friendly interactive shell
Type help for instructions on how to use fis

@antonengelhardt
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Just fixed it lol.

I used symlinks pointing from my dotfiles directory to the .config/fish... When i moved the fish folder back it solved it

@fnxr21
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fnxr21 commented May 21, 2023

in case anyone wants the complete guide for Apple Silicon (M1+) Macs:

Installing fish

brew install fish

https://fishshell.com

Fallback

To fall back to another shell for something, just type zsh or bash. It will temporarily change the shell until you restart your terminal. You can also type fish again to go back to fish.

Make fish the default

  1. check the fish path with which fish. In the examples below it was located at: /opt/homebrew/bin/fish
    On older Macs these paths might differ.
  2. Add fish to the know shells
    sudo sh -c 'echo /opt/homebrew/bin/fish >> /etc/shells'
  3. Restart your terminal
  4. Set fish as the default shell
    chsh -s /opt/homebrew/bin/fish
  5. Restart your terminal and check if it launched with fish or not
  6. Add brew binaries in fish path
    set -U fish_user_paths /opt/homebrew/bin/ $fish_user_paths

thats working ,thanks bro

@mrLuisFer
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in case anyone wants the complete guide for Apple Silicon (M1+) Macs:

Installing fish

brew install fish

https://fishshell.com

Fallback

To fall back to another shell for something, just type zsh or bash. It will temporarily change the shell until you restart your terminal. You can also type fish again to go back to fish.

Make fish the default

  1. check the fish path with which fish. In the examples below it was located at: /opt/homebrew/bin/fish
    On older Macs these paths might differ.
  2. Add fish to the know shells
    sudo sh -c 'echo /opt/homebrew/bin/fish >> /etc/shells'
  3. Restart your terminal
  4. Set fish as the default shell
    chsh -s /opt/homebrew/bin/fish
  5. Restart your terminal and check if it launched with fish or not
  6. Add brew binaries in fish path
    set -U fish_user_paths /opt/homebrew/bin/ $fish_user_paths

For MacOs chip M1 (v13.4.1) it worked correctly 🤝

@dony-wiranata
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It works nicely - thank you!

Just a sanity check, in case you fail at step 4. Set fish as the default shell (as in, when you re-open Terminal and fish does not get launched automatically), please ensure that in your Terminal app > General > Shells open with, it has Default login shell as the value, instead of Command (complete path).

image

@samuel-gibbon
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Worked perfect for me on M3, thanks

@santakdalai90
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Thanks for sharing. It helped a lot.

@sertugkaya
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Thanks for the tip! 👍 fish docs does not show the correct location as you mentioned :)

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