So you want to display 3D models in OpenGL on Linux using obj files? Let me show you how it's done!

Step 1: Set up your development environment. Make sure you have OpenGL installed on your Linux system and that you have a code editor and compiler ready to go.

Step 2: Load the obj file. Your obj file contains the 3D model data that you want to display. You'll need to write code to load the obj file and extract the vertex, normal, and texture coordinate data.

Step 3: Create shaders. Shaders are small programs that run on your GPU and tell it how to render the 3D model. You'll need to create a vertex shader and a fragment shader to render the obj file.

Step 4: Set up buffers and VAO. You'll need to set up buffers to store the vertex, normal, and texture coordinate data from the obj file. Then, you'll create a Vertex Array Object (VAO) to organize the data for rendering.

Step 5: Render the obj file. Finally, you can use the shaders and the data from the obj file to render the 3D model on the screen.

It may seem like a lot of steps, but once you understand the basics, displaying 3D models in OpenGL on Linux becomes much easier. Now you're ready to dive into the world of 3D graphics and create amazing visual experiences on Linux!