How to Fix the command not found: jenv Error in Your .zshrc File

Learn how to resolve the `command not found: jenv` error that appears when you open a new terminal with our step-by-step guide for MacOS users.
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This video is based on the question https://stackoverflow.com/q/64599422/ asked by the user 'user' ( https://stackoverflow.com/u/10308255/ ) and on the answer https://stackoverflow.com/a/75289394/ provided by the user 'Jean Suarez' ( https://stackoverflow.com/u/14288447/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Fix the command not found: jenv Error in Your .zshrc File

If you use jENV to manage your Java versions on MacOS, you might encounter an annoying error every time you open up a new terminal: command not found: jenv. This issue can be frustrating, especially if you’ve recently installed jENV and configured it with Corretto-8. In this guide, we will walk through the reasons behind this error and how to fix it, ensuring that your terminal works smoothly with jENV.

Understanding the Problem

When you run into the command not found: jenv message in your terminal, it typically means that your terminal is trying to execute a command (in this case, jenv) that it cannot find in its current path. This situation often arises if the configuration statements for jENV in your .zshrc or .bash_profile are not correctly set up or if there are conflicting configurations.

What is .zshrc?

The .zshrc file is a configuration file for the Z shell (zsh) that is executed whenever a new terminal session starts. It’s where you put environment settings such as PATH exports and other configurations needed for your shell to function correctly.

Diagnosing the Issue

After installing jENV, you might have followed certain steps, such as adding commands to your shell profile. If you ran the following commands:

[[See Video to Reveal this Text or Code Snippet]]

However, if you are using Z shell (zsh), these lines should actually be added to your .zshrc file instead of .bash_profile. This confusion can lead to the command not found: jenv error message.

Solution: Fixing the Configuration

To resolve the issue, follow these simple steps:

Open Your .zshrc File
You can use a text editor like nano or vim. For example, run:

[[See Video to Reveal this Text or Code Snippet]]

Remove the Incorrect Lines
Look for the lines you added for jENV in the .bash_profile. If they exist in your .zshrc, remove them:

[[See Video to Reveal this Text or Code Snippet]]

Add the Correct Configuration (If Needed)
If you haven’t already, make sure to add the correct jENV lines to your .zshrc file. The commands should look like this:

[[See Video to Reveal this Text or Code Snippet]]

Save and Exit
If you are using nano, you can save your changes by pressing CTRL + O, followed by ENTER, then exit with CTRL + X. For vim, use :wq to write and quit.

Refresh Your Terminal
After updating your configuration, refresh your terminal to apply the changes. You can do this by either closing and reopening the terminal or running the following command:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By ensuring that the commands related to jENV are correctly placed in your .zshrc file, you should no longer see the command not found: jenv error when opening a new terminal session. This fix not only streamlines your workflow but also enhances your overall experience while managing Java versions on MacOS.

If you continue to face any issues, make sure that jENV is installed correctly and consult the jENV documentation for additional troubleshooting tips. Happy coding!