how to know if express is intalled

Checking if Express is Installed

To check if Express is installed, you can use the following command in your terminal:

npm list express

This command will check if Express is installed in your current project. If it is installed, it will display the version number. If it's not installed, there will be no output.

Explanation of the Command

The npm list command is used to display the installed packages in the current project. When followed by a package name, such as express, it specifically checks for the presence of that package.

By running npm list express, you are asking npm to list the installed version of the Express package, if it exists in the current project. If it is installed, the version number will be displayed. If it is not installed, there will be no output.

This command is a quick and easy way to verify if Express is installed in your project.

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