Linux From Scratch (LFS)

Overview

This project is a custom-built Linux From Scratch (LFS) system, designed to provide a deeper understanding of operating systems by building one from scratch. The system is lightweight, functional, and includes links, a terminal-based web browser, for basic internet browsing.

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Key Features

• Fully custom-built Linux operating system.
• Lightweight design with idle RAM usage around 70-80 MiB.
• Includes links for terminal-based internet browsing.
• Capable of performing most tasks of a typical Linux system.

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Technologies Used

• Linux From Scratch: Built following the official LFS book and guidelines.
• Custom Kernel & Bootloader Configuration: Customized for the system.
• Links Web Browser: For terminal-based internet access.

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My Role

• Managed the entire build process: from compiling the kernel to configuring essential utilities.
• Debugged and resolved kernel and bootloader issues to ensure successful booting.
• Conducted research and troubleshooting to overcome challenges during system configuration.

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Prerequisites

• VirtualBox installed on your system.
• At least 512 MB of RAM available for the virtual machine.
• A system with internet access (if using a bridged adapter for the VM).

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How to Run the LFS System

1. Download the LFS Files

Clone the repository to your local system:

git clone https://github.com/AvinashAbbigeri/LFS

2. Extract the Files

Use any zip extraction tool to extract the downloaded .zip file.

3. Create a New Virtual Machine in VirtualBox

1. Open VirtualBox.
2. Click New to create a new virtual machine.
3. Configure the VM:
   • Name: Linux From Scratch
   • Type: Linux
   • Version: Other Linux (64-bit)
   • RAM: Assign 512 MB (or more, based on your resources).
   • Hard Disk: Choose Use an existing virtual hard disk file, browse to the extracted .vdi file, and select it.

4. Adjust VM Settings (Optional)

• System Settings:
  Go to Settings > System, and ensure Enable EFI (Special OSes only) is unchecked.
• Network Settings:
  Under Network, select either NAT or Bridged Adapter for internet access.

5. Start the Virtual Machine

Once the setup is complete:

1. Start the VM from the VirtualBox interface.
2. The LFS system will boot, and you can log in using the credentials below.

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Default Credentials

• Username: root
• Password: root

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Outcome

• Gained a deeper understanding of operating system internals and build processes.
• Built a lightweight, fully functional Linux system from scratch.
• Successfully integrated terminal-based internet browsing with the links web browser.

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Challenges Solved

• Resolved kernel and bootloader issues to ensure successful booting.
• Debugged system configurations by researching and troubleshooting effectively.

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Notes

• For questions or support, feel free to reach out via GitHub Issues.
• This system is educational and intended for exploring OS internals. Not recommended for production use.

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