Linux is a powerful and versatile operating system crucial for businesses due to its customization and flexibility.The article covers Linux fundamentals, kernel, distributions, file hierarchy, and its role in tech and business.Linux's stability and file structure consistency across distributions make it ideal for various applications.Popular Linux distributions include Ubuntu, Debian, Fedora, CentOS, RHEL, Arch, and SUSE, catering to different needs.Linux is extensively used in AWS for services like EC2, Lambda, and ECS, providing a secure cloud platform.Businesses leverage Linux for server management, system administration with Bash, and DevOps automation.Linux file structure showcases key directories starting from the root directory, aiding in system organization.RHEL 9 is favored in industries for its stability, security, support, scalability, and compatibility features.Understanding Linux enhances efficiency, security, collaboration, and simplifies debugging for personal and professional tasks.Mastering Linux empowers users in navigating systems, automating tasks, and excelling in DevOps and server management.