Understanding and Resolving the 'PM2 Command Not Found' Error

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Understanding and Resolving the "PM2 Command Not Found" Error

What is PM2?

Causes of the "PM2 Command Not Found" Error

The "PM2 command not found" error usually implies that the shell cannot locate the PM2 executable in your system's PATH. This can happen for several reasons:

Incorrect Installation: PM2 might not have been installed properly.

Environment PATH Issues: The PATH variable does not include the directory where PM2 is installed.

Global vs Local Installation: PM2 might have been installed locally within a project directory rather than globally.

Steps to Resolve the Error

Ensure PM2 is Installed Globally

To install PM2 globally, you should use npm with the -g flag. Open your terminal and run the following command:

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This command installs PM2 globally, making it available from any directory.

Check the Installation

After installing, verify the installation by running:

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If this returns a version number, PM2 is installed correctly.

Set the Correct PATH

If PM2 is installed but still not recognized, you may need to add it to your PATH. You can find the location where npm installs global packages with:

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Typically, the path might be something like /usr/local/lib/node_modules. Add this path to your shell configuration file (e.g., .bashrc, .bash_profile, .zshrc) as follows:

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Reload Your Shell

After making changes to the shell configuration file, reload it using:

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Recheck After Configuration

Finally, recheck the installation by running:

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Conclusion

With PM2 properly set up, you can leverage its powerful features to keep your applications running smoothly and handle various admin tasks with ease.