安装 fish
sudo apt-add-repository ppa:fish-shell/release-2
sudo apt-get update
sudo apt-get install fish
设置默认 shell 为 fish
chsh -s /usr/bin/fish
退出,重新登录
sudo apt-add-repository ppa:fish-shell/release-2
sudo apt-get update
sudo apt-get install fish
chsh -s /usr/bin/fish
退出,重新登录