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The UNIX Operating System

October 12, 2020 Krishna FILE SYSTEM, kernel, OPERATING SYSTEM, SHELL, The UNIX Operating System, UNIX

The UNIX system is mainly composed of three different parts: the kernel, the file system, and the shell. [The kernel]

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Kernel Modules Versus Applications

April 2, 2020April 2, 2020 Krishna Concurrency in the Kernel, kernel, Kernel Modules Versus Applications, kernel programming, Linking a module to the kernel, Linux, Linux kernel code, The Current Process, ubuntu, User Space and Kernel Space

Before we go further, it’s worth underlining the various differences between a kernel module and an application. Whereas an application

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Security Issues

April 2, 2020 Krishna capability mechanism, encoding security policy, exploiting bugs, general security, incidental, kernel, policy issue, security check, security issue, Security Issues, superuser shell

Security is an increasingly important concern in modern times. We will discuss security-related issues as they come up. There are

Splitting the Kernel

April 2, 2020 Krishna Device control, Filesystems, kernel, Memory management, NETWORKING, Process management, Splitting the Kernel, unstructured hardware

In a Unix system, several concurrent processes attend to different tasks. Each process asks for system resources, be it computing