Gulp is installed on the system but when call the gulp it is on not working.

f Gulp is installed on your system but not working when you try to run the gulp command, there could be several potential reasons for this issue. Here are a few troubleshooting steps you can follow:

1. Check the Gulp version: Ensure that you have installed Gulp globally by running the following command:
   gulp -v
   This will display the version of Gulp installed on your system. If the command doesn’t provide any output or shows an error, it indicates that Gulp might not be properly installed.
2. Verify the installation: Double-check that Gulp is installed globally by running the following command:css
   npm list -g --depth=0 | grep gulp
   This command will list all globally installed packages and check if Gulp is among them. If you don’t see Gulp listed, it means it is not installed globally, and you need to install it using the following command:
   npm install -g gulp
3. Ensure proper PATH configuration: Make sure that the directory where Gulp is installed is included in your system’s PATH environment variable. You can verify this by running the following command:bash
   echo $PATH
   Check if the path to the Gulp installation directory (typically /usr/local/lib/node_modules/gulp/bin) is included in the output. If it’s missing, you can add it to your PATH by modifying the appropriate configuration file (such as ~/.bashrc or ~/.bash_profile) and adding the following line:bash
   export PATH="/usr/local/lib/node_modules/gulp/bin:$PATH"
   Save the file, and then run source ~/.bashrc (or source ~/.bash_profile) to apply the changes to your current session.
4. Check for any conflicting versions: If you have multiple versions of Gulp installed or conflicting dependencies, it can cause issues. Ensure that there are no other conflicting versions of Gulp or conflicting packages installed that could interfere with the proper execution of the gulp command.
5. Verify project-specific dependencies: If you are trying to run Gulp within a specific project, navigate to the project’s root directory and check if the project has a package.json file that lists Gulp as a dependency. If it does, ensure that you run npm install in the project directory to install all the project’s dependencies, including Gulp.
6. Clear npm cache: In some cases, clearing the npm cache can resolve issues with package installations and dependencies. You can clear the cache by running the following command:css
   npm cache clean --force

By following these steps, you should be able to troubleshoot and resolve the issue with running the gulp command. If the problem persists, please provide any error messages or specific details about the behavior you are experiencing, which will help in further diagnosing the issue.