How to change the user shell
The default command-line interpreter or shell in most distros is Bash, but you can install another shell from your system repositories and turn it into your default shell.
Install a shell
First step is, obviously, to install a shell. There are several shells (check my list) but for this tutorial I am going to use Fish.
# Debian/Ubuntu sudo apt install fish # Arch sudo pacman -S fish
You can run Fish inside your current shell by typing
Change default user shell
We can use
chsh to change user login shell. First, you need to know the full path of your new shell (run
which fish). Then, run
chsh with the parameter
-s and the shell path.
chsh -s /usr/bin/fish
Type your user password and log out. When you log in again, your default shell will be Fish.