how to check jenkins version in ubuntu with code examples

Jenkins is a popular open-source tool used for Continuous Integration and Continuous Deployment (CI/CD) pipelines. Knowing the version of Jenkins you are running is important to ensure compatibility with plugins and to take advantage of new features and security fixes. In this article, we will show you how to check the version of Jenkins in Ubuntu.

There are several methods to check the version of Jenkins in Ubuntu, and we will cover the most common ones.

Method 1: Check Jenkins Version through the Web UI

The simplest way to check the version of Jenkins in Ubuntu is to access the web interface. Follow the steps below to access the Jenkins web interface and check the version:

1. Open a web browser and type the URL http://:8080/ (replace with the hostname or IP address of your Jenkins server).

2. Log in to the Jenkins web interface using your Jenkins credentials.

3. On the Jenkins home page, click on the “About Jenkins” link in the footer.

4. On the “About Jenkins” page, you can see the version of Jenkins in the top section.

Method 2: Check Jenkins Version through the CLI

Another way to check the version of Jenkins in Ubuntu is through the command line interface (CLI). To check the version of Jenkins using the CLI, follow these steps:

1. Log in to your Jenkins server using SSH.

2. Run the following command:

curl http://<jenkins-server>:8080/jenkins/version

Replace with the hostname or IP address of your Jenkins server. The output of the command will show you the version of Jenkins installed on your server.

Method 3: Check Jenkins Version through the Man Page

You can also check the version of Jenkins in Ubuntu by using the man page. Follow these steps to check the version using the man page:

1. Log in to your Jenkins server using SSH.

2. Run the following command:

man jenkins

3. Scroll down the man page until you see the “Version” section. The version of Jenkins installed on your server will be listed in this section.

Conclusion

In this article, we have shown you three methods to check the version of Jenkins in Ubuntu. Whether you prefer to use the web interface, the CLI, or the man page, you now have the tools to easily determine the version of Jenkins running on your server. Keeping track of your Jenkins version is important to ensure compatibility with plugins, take advantage of new features, and maintain security.
Updating Jenkins

Once you have confirmed the version of Jenkins installed on your Ubuntu server, it's important to keep it up-to-date to take advantage of new features, bug fixes, and security updates. Jenkins can be updated either through the web interface or the command line.

Updating Jenkins through the Web UI

To update Jenkins through the web interface, follow these steps:

1. Log in to the Jenkins web interface using your credentials.

2. Click on the “Manage Jenkins” link on the left side of the screen.

3. Click on the “Manage Plugins” link.

4. Click on the “Updates” tab.

5. Check the box next to the “Jenkins” plugin and click on the “Download now and install after restart” button.

6. After the update is installed, click on the “Restart Jenkins” button.

Updating Jenkins through the Command Line

To update Jenkins through the command line, follow these steps:

1. Log in to your Jenkins server using SSH.

2. Run the following command:

sudo apt-get update && sudo apt-get upgrade jenkins

The above command will update the Jenkins package and all its dependencies to the latest version available in the repository.

Managing Plugins in Jenkins

Plugins in Jenkins allow you to extend the functionality of the tool. You can install new plugins, manage existing plugins, and uninstall plugins that are no longer needed.

Installing Plugins in Jenkins

To install a new plugin in Jenkins, follow these steps:

1. Log in to the Jenkins web interface using your credentials.

2. Click on the “Manage Jenkins” link on the left side of the screen.

3. Click on the “Manage Plugins” link.

4. Click on the “Available” tab.

5. Use the search bar to find the plugin you want to install.

6. Check the box next to the plugin and click on the “Download now and install after restart” button.

7. After the plugin is installed, click on the “Restart Jenkins” button.

Managing and Uninstalling Plugins in Jenkins

To manage or uninstall plugins in Jenkins, follow these steps:

1. Log in to the Jenkins web interface using your credentials.

2. Click on the “Manage Jenkins” link on the left side of the screen.

3. Click on the “Manage Plugins” link.

4. Click on the “Installed” tab.

5. Find the plugin you want to manage or uninstall.

6. If you want to manage the plugin, click on its name to view its settings.

7. If you want to uninstall the plugin, check the box next to its name and click on the “Uninstall” button.

In conclusion, checking the version of Jenkins in Ubuntu, updating Jenkins, and managing plugins are important tasks to ensure the stability, security, and efficiency of your CI/CD pipeline. By following the steps outlined in this article, you can easily perform these tasks and take full advantage of the power of Jenkins.

Popular questions

1. How do I check the Jenkins version in Ubuntu using the command line?

Answer: To check the Jenkins version in Ubuntu using the command line, you can run the following command:

jenkins --version

2. How do I check the Jenkins version in Ubuntu through the web interface?

Answer: To check the Jenkins version in Ubuntu through the web interface, log in to the Jenkins web interface, click on the “Manage Jenkins” link on the left side of the screen, and then click on the “System Information” link. The Jenkins version will be displayed under the “Jenkins Location” section.

3. How do I update Jenkins in Ubuntu using the command line?

Answer: To update Jenkins in Ubuntu using the command line, log in to your Jenkins server using SSH and run the following command:

sudo apt-get update && sudo apt-get upgrade jenkins

4. How do I update Jenkins in Ubuntu through the web interface?

Answer: To update Jenkins in Ubuntu through the web interface, log in to the Jenkins web interface, click on the “Manage Jenkins” link on the left side of the screen, click on the “Manage Plugins” link, click on the “Updates” tab, check the box next to the “Jenkins” plugin, and click on the “Download now and install after restart” button. After the update is installed, click on the “Restart Jenkins” button.

5. How do I install a new plugin in Jenkins in Ubuntu?

Answer: To install a new plugin in Jenkins in Ubuntu, log in to the Jenkins web interface, click on the “Manage Jenkins” link on the left side of the screen, click on the “Manage Plugins” link, click on the “Available” tab, use the search bar to find the plugin you want to install, check the box next to the plugin, and click on the “Download now and install after restart” button. After the plugin is installed, click on the “Restart Jenkins” button.

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