How to install Fish

Fish is a modern shell that has user-friendly features like colors and auto-completion and works right out of the box.

Ubuntu already ships Fish, so installing it is easy:

$ sudo apt install fish

The version of Fish that Ubuntu maintains is quite old. Fish is under active development, with lots of new features added regularly. If you want the latest stable version of Fish:

$ sudo apt remove fish
$ sudo add-apt-repository ppa:fish-shell/release-2
$ sudo apt-get update
$ sudo apt install fish

If you want the latest beta version of Fish:

$ sudo apt remove fish
$ sudo add-apt-repository ppa:fish-shell/beta-2
$ sudo apt-get update
$ sudo apt install fish

Tried with: Fish 2.2b1 and Ubuntu 14.04