Step-by-step guide to install Jenkins, covering both Linux and Windows system

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Jenkins Installation Steps:

Install Jenkins on Linux (Ubuntu/Debian-based):

# 1. Update system
sudo apt update

# 2. Install Java (Jenkins requires Java 11+)
sudo apt install openjdk-11-jdk -y

# 3. Add Jenkins repo and key
wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

# 4. Install Jenkins
sudo apt update
sudo apt install jenkins -y

# 5. Start and enable Jenkins
sudo systemctl start jenkins
sudo systemctl enable jenkins

# 6. Check Jenkins status
sudo systemctl status jenkins


Get initial admin password:

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

Access Jenkins:

Go to http://<your-server-ip>:8080

Use the above password to unlock Jenkins.

Install Jenkins on Windows:

Download Jenkins Windows Installer:

Go to https://www.jenkins.io/download/ and select Windows.

Download the .msi installer.

Run the Installer:

Double-click the installer and follow the wizard.

It installs Jenkins as a Windows service.

Get Initial Password:

Check: C:\Program Files (x86)\Jenkins\secrets\initialAdminPassword

Launch Jenkins in Browser:

Open http://localhost:8080

Enter the initial admin password

Create Admin User and complete the setup.




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