Fish Shell

Install

apt install fish

Make fish your default shell:

chsh -s /usr/bin/fish

Configure

Make sure the fish shell is active, and then run:

fish_config

Commands

To merge history:

history --merge

To set a universal variable (preserved across reboot):

set -U EDITOR vim

Environment Variables

Erase:

set -e myvar

PATH

Add the following to ~/.config/fish/config.fish:

set -x PATH $PATH ~/bin/