Summary
From their website:
Fish is a smart and user-friendly command line shell for Linux, macOS, and the rest of the family.
Technical stuff
Install Fish
Install on Linux (Ubuntu):
sudo apt update && sudo apt install fish
Make Fish the default shell
chsh -s /usr/bin/fish
Install Extensions
Fisher, a plugin manager
curl -sL https://raw.githubusercontent.com/jorgebucaran/fisher/main/functions/fisher.fish | source && fisher install jorgebucaran/fisher
Tide, the ultimate Fish prompt
fisher install IlanCosman/tide@v6