The Z shell (zsh) is a popular alternative to the default Bourne-again shell (bash) in Unix-like systems. The popularity of zsh -- especially among developers -- may be attributed to “Oh My Zsh."

Oh My Zsh is an open-source and community-based platform which provides useful plugins, functions and themes for personalizing your Z shell experience.

In this guide, we are going to install zsh and oh my zsh on Linux running on WSL 2.

Install zsh

On Ubuntu Linux and other Debian-based distributions, run sudo apt-get install zsh

shx@DESKTOP-P6O4TPP:~$ sudo apt-get install zsh

On Redhat-based systems; including CentOS and Fedora, run yum install zsh

shx@DESKTOP-P6O4TPP:~$ yum install zsh

Set zsh as Default Shell

After you have successfully installed zsh, you can set it as your default shell by running chsh -s /bin/zsh

shx@DESKTOP-P6O4TPP:~$ chsh -s /bin/zsh

You may now close the terminal and launch it again for the change to take effect.

Upon launching the terminal again, you should see the Z Shell configuration function message. Press 0 to create the zsh startup file.

Z Shell Configuration For New Users

At the new prompt that appears, type echo $SHELL to verify that you are now using zsh.

DESKTOP-P6O4TPP% echo $SHELL
/bin/zsh

Install oh my zsh

Using curl

sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

DESKTOP-P6O4TPP% sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
Cloning Oh My Zsh...
Cloning into '/home/shx/.oh-my-zsh'...


Using wget

sh -c "$(wget https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh -O -)"

DESKTOP-P6O4TPP% sh -c "$(wget https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh -O -)"

Install Themes and Plugins

As earlier mentioned, Oh My Zsh allows you to customize your zsh experience using themes and plugins. You can check out the Github links below to find what you like.

Install a new theme

For example, I am going to change my theme from the default "robbyrussel" to "amuse" by modifying the .zshrc file in my home directory. You can use your favourite text editor. I am using nano in this example.

➜  ~ nano ~/.zshrc  

I would simply update the value of ZSH_THEME to "amuse" and then press CTRL + O on the keyboard; and hit enter to confirm the change.

Change Zsh Theme
Change Zsh Theme

Closing the terminal and launching it again allows the change to take effect. Here is what my new theme looks like.

Zsh "amuse" Theme
Zsh "amuse" Theme

To completely disable themes, you can set ZSH_THEME to an empty string as follows: ZSH_THEME=""

Install a new plugin

To install a plugin, modify the .zshrc file and update the value of the plugins array as desired. In the example below, I have installed the adb plugin alongside the default git plugin.

Install Zsh Plugin
Install Zsh Plugin

Once done, close and launch the terminal again to allow the changes to take effect.

Conclusion

Now you may scream, "Oh My Zsh!" We hope that you explore and enjoy your new zsh experience. If you have any questions or comments regarding this article, do let us know in the comments section below.