The Xvfb command starts a virtual display server with specified characteristics, including resolution, color depth, and extensions. The command Xvfb :0 -ac -screen 0 1024x768x24 +extension RANDR is used to start a specific virtual display server with 1024x768 resolution, true color, and RANDR extension enabled.

Run example

npm run import -- "What is Selenium"

What is Selenium

Xvfb :0 -ac -screen 0 1024x768x24 +extension RANDR

bash
#!/bin/bash

# Set the display resolution and depth for the Xvfb server
display_resolution="1024x768x24"

# Add the RANDR extension for dynamic resolution changes
display_extensions="RANDR"

# Start the Xvfb server
Xvfb :0 -ac -screen 0 "${display_resolution}" +extension "${display_extensions}"

Code Breakdown:

Xvfb Command

• Xvfb: Start the X virtual framebuffer (Xvfb) server.
• :0: Specify the display number (in this case, display 0).
• -ac: Disable access control to allow for execution by any user.
• -screen 0 1024x768x24: Define a virtual screen with the following characteristics:
  • Screen number 0.
  • Resolution: 1024x768 pixels.
  • Color depth: 24 bits per pixel (true color).
• +extension RANDR: Enable the RANDR (Resize and Rotate) extension, which allows for dynamic screen resizing and rotation.