In this post I will show you how to install the ZSH shell on Rocky Linux. ZSH is an alternate shell that some people prefer instead of BASH shell. Some people say ZSH has better auto-completion, theme support, and plugin system. If you want to give ZSH a try its quite easy to install and give it a try. This post is focused on the Rocky Linux user and how to install ZSH and get started with its usage.
Before installing anything new, it’s good practice to update your system packages:

sudo dnf update


It might be easier than you think to install and use a new shell. First install the package like this:

sudo dnf install zsh


Now you can enter a session of zsh be invoking the shell’s name ‘zsh’.

zsh


You might not be sure if it succeeded, how you can verify which sell you are using now?

echo $0


You should see some output like the following:

[root@mypc]~# echo $0:

zsh:

[root@mypc]~#


ok good, if it says bash or something other than zsh you have a problem with your setup. Now lets run a couple basic commands

Example 1: Print all numbers from 1 to 10. In Zsh, you can use a for loop to do this:

for i in {1..10}; do echo $i; done


Example 2: Create a variable to store your username and then print it. You can use the $USER environment variable which automatically contains your username:

my_username=$USER

echo $my_username


Example 3: Echo a string that says “I love $0”. The $0 variable in a shell script or interactive shell session refers to the name of the script or shell being run. Here’s how to use it:

echo "I love $0"


When run in an interactive Zsh session, this will output something like “I love -zsh” if you’re in a login shell, or “I love zsh” if not.

Conclusion

Switching shells in a linux system is easy due to the modularity. Now that you see how to install ZSH you may like it and decide to use it as your preferred shell.





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