Setup `fish` shell and `oh my fish`

Install fish

friendly interactive shell

sudo apt install fish

# setup `fish` as default shell
chsh -s $(which fish)

# alternative to set the default shell, if the above method does not work.
# find where fish is installed
which fish
# open the file
sudo nano /etc/shells
# add the path from above in the file.

Restart the operating system for the changes to be updated

Note

List of all oh-my-fish themes

Install oh-my-fish

Oh My Fish provides core infrastructure to allow you to install packages which extend or modify the look of your shell. It’s fast, extensible and easy to use.

https://github.com/oh-my-fish/oh-my-fish

# Install Oh-My-Fish, required for themes
curl https://raw.githubusercontent.com/oh-my-fish/oh-my-fish/master/bin/install | fish

omf install bobthefish

# [Optional] Install NerdFont --> FiraCode
wget https://github.com/ryanoasis/nerd-fonts/releases/download/v3.3.0/FiraCode.zip -O FiraCode.zip

unzip FiraCode.zip -d FiraCode

mkdir -p ~/.fonts

cp FiraCode/*.ttf ~/.fonts/

fc-cache -fv

fc-list | grep "FiraCode"

rm -rf FiraCode.zip FiraCode

set -g theme_powerline_fonts no

#activating the nerd-fonts in the `fish` terminal
set -g theme_nerd_fonts yes

Troubleshoot

For GNOME Terminal (default terminal on Ubuntu)

1. Open GNOME Terminal Preferences:

   • Open the terminal.
   • Click the hamburger menu (☰) in the top-right corner.
   • Select Preferences.

2. Select Your Profile:

   • In the left pane, choose the profile you want to edit (e.g., “Unnamed” or “Default”).

3. Change Font:

   • Scroll down to the Text section.
   • Toggle Custom Font on.
   • Click the font selection box, and a font chooser dialog will appear.

4. Select Font:

   • Search for FiraCode Nerd Font in the font list.
   • Choose the desired size and click Select.

5. Save and Close:

   • The font will update immediately. Close the preferences window to apply the changes.

For VS Code

In the Editor

1. Open VS Code Settings:

   • Click the gear icon in the bottom-left corner and select Settings.
   • Alternatively, press Ctrl + ,.

2. Search for Font Family:

   • In the search bar at the top, type editor.fontFamily.

3. Update the Font Family:

   • Click the pencil icon next to Editor: Font Family and edit the field.
   • Add FiraCode Nerd Font at the beginning of the list:

     "FiraCode Nerd Font", Consolas, "Courier New", monospace

4. Enable Font Ligatures (Optional):

   • Search for editor.fontLigatures in the settings.
   • Toggle the option On, or add this line in your settings.json file:

     "editor.fontLigatures": true

In the Integrated Terminal

1. Open Settings:

   • Follow the steps above to access the Settings.

2. Search for Terminal Font Family:

   • In the search bar, type terminal.integrated.fontFamily.

3. Update the Terminal Font:

   • Click the pencil icon and edit the field.
   • Add FiraCode Nerd Font:

4. Adjust Font Size (Optional):

   • Search for terminal.integrated.fontSize and increase or decrease the size as needed, e.g., 14.

Options to override some of the following default options in config.fish:

set -g theme_display_git no
set -g theme_display_git_dirty no
set -g theme_display_git_untracked no
set -g theme_display_git_ahead_verbose yes
set -g theme_display_git_dirty_verbose yes
set -g theme_display_git_stashed_verbose yes
set -g theme_display_git_default_branch yes
set -g theme_git_default_branches master main
set -g theme_git_worktree_support yes
set -g theme_use_abbreviated_branch_name yes
set -g theme_display_vagrant yes
set -g theme_display_docker_machine no
set -g theme_display_k8s_context yes
set -g theme_display_hg yes
set -g theme_display_virtualenv no
set -g theme_display_nix no
set -g theme_display_ruby no
set -g theme_display_node yes
set -g theme_display_user ssh
set -g theme_display_hostname ssh
set -g theme_display_vi no
set -g theme_display_date no
set -g theme_display_cmd_duration yes
set -g theme_title_display_process yes
set -g theme_title_display_path no
set -g theme_title_display_user yes
set -g theme_title_use_abbreviated_path no
set -g theme_date_format "+%a %H:%M"
set -g theme_date_timezone America/Los_Angeles
set -g theme_avoid_ambiguous_glyphs yes
set -g theme_powerline_fonts no
set -g theme_nerd_fonts yes
set -g theme_show_exit_status yes
set -g theme_display_jobs_verbose yes
set -g default_user your_normal_user
set -g theme_color_scheme dark
set -g fish_prompt_pwd_dir_length 0
set -g theme_project_dir_length 1
set -g theme_newline_cursor yes
set -g theme_newline_prompt '$ '