Git is a distributed version control system DVCS designed for efficient source code management, suitable for both small and large projects. It allows multiple developers to work on a project simultaneously without overwriting changes, supporting collaborative work, continuous integration, and deployment. This Git and GitHub tutorial is designed for beginners to learn fundamentals and advanced concepts, including branching, pushing, merging conflicts, and essential Git commands. Prerequisites include familiarity with the command line interface CLI, a text editor, and basic programming concepts. Git was developed by Linus Torvalds for Linux kernel development and tracks changes, manages versions, and enables collaboration among developers. It provides a complete backup of project history in a repository. GitHub is a hosting service for Git repositories, facilitating project access, collaboration, and version control. The tutorial covers topics such as Git installation, repository creation, Git Bash usage, managing branches, resolving conflicts, and working with platforms like Bitbucket and GitHub. The text is a comprehensive guide to using Git and GitHub, covering a wide range of topics. It includes instructions on working directories, using submodules, writing good commit messages, deleting local repositories, and understanding Git workflows like Git Flow versus GitHub Flow. There are sections on packfiles, garbage collection, and the differences between concepts like HEAD, working tree, and index. Installation instructions for Git across various platforms Ubuntu, macOS, Windows, Raspberry Pi, Termux, etc. are provided, along with credential setup. The guide explains essential Git commands, their usage, and advanced topics like debugging, merging, rebasing, patch operations, hooks, subtree, filtering commit history, and handling merge conflicts. It also covers managing branches, syncing forks, searching errors, and differences between various Git operations e.g., push origin vs. push origin master, merging vs. rebasing. The text provides a comprehensive guide on using Git and GitHub. It covers creating repositories, adding code of conduct, forking and cloning projects, and adding various media files to a repository. The text explains how to push projects, handle authentication issues, solve common Git problems, and manage repositories. It discusses using different IDEs like VSCode, Android Studio, and PyCharm, for Git operations, including creating branches and pull requests. Additionally, it details deploying applications to platforms like Heroku and Firebase, publishing static websites on GitHub Pages, and collaborating on GitHub. Other topics include the use of Git with R and Eclipse, configuring OAuth apps, generating personal access tokens, and setting up GitLab repositories. The text covers various topics related to Git, GitHub, and other version control systems Key Pointers Git is a distributed version control system DVCS for source code management. Supports collaboration, continuous integration, and deployment. Suitable for both small and large projects. Developed by Linus Torvalds for Linux kernel development. Tracks changes, manages versions, and provides complete project history. GitHub is a hosting service for Git repositories. Tutorial covers Git and GitHub fundamentals and advanced concepts. Includes instructions on installation, repository creation, and Git Bash usage. Explains managing branches, resolving conflicts, and using platforms like Bitbucket and GitHub. Covers working directories, submodules, commit messages, and Git workflows. Details packfiles, garbage collection, and Git concepts HEAD, working tree, index. Provides Git installation instructions for various platforms. Explains essential Git commands and advanced topics debugging, merging, rebasing. Covers branch management, syncing forks, and differences between Git operations. Discusses using different IDEs for Git operations and deploying applications. Details using Git with R, Eclipse, and setting up GitLab repositories. Explains CI/CD processes and using GitHub Actions. Covers internal workings of Git and its decentralized model. Highlights differences between Git version control system and GitHub hosting platform.
This guide will help you install Jenkins on an Ubuntu 18.04 system.
Prerequisites
- A system running Ubuntu 18.04 Bionic Beaver
- A user account with sudo privileges
- Access to a terminal window / command line (CTRL+ALT+T or search > terminal)
- Java 8 or 11
Step 1: Install Java
If you already have Java installed on your system, skip ahead to the next section. It is recommended that you install OpenJDK from the default repositories. Open a terminal window and enter the following:sudo apt updatesudo apt install openjdk-8-jdksudo apt install openjdk-11-jdkY and hit Enter, then allow the process to finish.
Step 2: Install Jenkins
1. To install Jenkins on Ubuntu, use the following commands:sudo apt updatesudo apt install jenkinsY and hit Enter, and the system downloads and installs Jenkins.
3. To check Jenkins was installed and is running enter:
sudo systemctl status jenkinsactive (exited). This means the service is running.
4. Exit the status screen by pressing Ctrl+Z.
Step 3: Modify Firewall to Allow Jenkins
You need to open Port 8080 to allow Jenkins to communicate. If you’re using the default UFW firewall, enter the following:sudo ufw allow 8080sudo ufw status
sudo ufw enableStep 4: Set up Jenkins
1. To launch and set up Jenkins, open a web browser, and navigate to the IP address of your server:http://ip_address_or_domain:8080http://localhost:8080
2. You should see a page that prompts you to Unlock Jenkins. You’ll need the default password. You can get the default password by switching to a command line and entering the following:
sudo cat /var/lib/jenkins/secrets/initialAdminPassword
You can always install more plugins later. The system continues the initial Jenkins setup.
5. Then you will be prompted to Create First Admin User.
Enter the credentials you want to use for your Jenkins administrator, then Save and Continue.
6. After this, you should set up the Instance Configuration. This is the preferred network address for this Jenkins installation. Confirm the address you want to use for your server. This is most likely the same address you used to get to this configuration page. When you’re satisfied, click Save and Finish.
7. You should see a page that says Jenkins is ready!
You can click Start using Jenkins to open the Jenkins dashboard.
