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OverviewThe Linux® kernel is the main component of a Linux operating system (OS) and is the core interface between a computer’s hardware and its processes. It communicates between the 2, managing resources as efficiently as possible. The kernel is so named because—like a seed inside a hard shell—it exists within the OS and controls all the major functions of the hardware, whether it’s a phone, laptop, server, or any other kind of computer.
What the kernel doesThe kernel has 4 jobs:
The kernel, if implemented properly, is invisible to the user, working in its own little world known as kernel space, where it allocates memory and keeps track of where everything is stored. What the user sees—like web browsers and files—are known as the user space. These applications interact with the kernel through a system call interface (SCI). Think about it like this: The kernel is a busy personal assistant for a powerful executive (the hardware). It’s the assistant’s job to relay messages and requests (processes) from employees and the public (users) to the executive, to remember what is stored where (memory), and to determine who has access to the executive at any given time and for how long.
Where the kernel fits within the OSTo put the kernel in context, you can think of a Linux machine as having 3 layers:
Code executed by the system runs on CPUs in 1 of 2 modes: kernel mode or user mode. Code running in the kernel mode has unrestricted access to the hardware, while user mode restricts access to the CPU and memory to the SCI. A similar separation exists for memory (kernel space and user space). These 2 small details form the base for some complicated operations like privilege separation for security, building containers, and virtual machines. This also means that if a process fails in user mode, the damage is limited and can be recovered by the kernel. However, because of its access to memory and the processor, a kernel process crash can crash the entire system. Since there are safeguards in place and permissions required to cross boundaries, user process crashes usually can’t cause too many problems.
Why choose Red Hat?At Red Hat, Linux is the foundation of everything we do. Red Hat is the second largest corporate contributor to the Linux kernel, bringing with it the experience and expertise of 25 years and a large community of partners, customers, and experts from across the industry. That’s a long relationship, with a history and level of experience that’s hard to come by. The Linux kernel is open source, and open source is at the core of Red Hat’s values. Learn why we’ve built our company on our conviction that Red Hat® Enterprise Linux is the best.
Linux is an open source operating system that is made up of the kernel, the base component of the OS, and the tools, apps, and services bundled along with it.
Security-Enhanced Linux (SELinux) is a security architecture for Linux® systems that allows administrators to have more control over who can access the system.
Article What is the Linux kernel?The Linux kernel is the main component of a Linux operating system (OS) and is the core interface between a computer’s hardware and its processes. More about LinuxProducts A stable, proven foundation that’s versatile enough for rolling out new applications, virtualizing environments, and creating a more secure hybrid cloud. Related articlesResources
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Keep exploringGet more content like thisSign up for our free newsletter, Red Hat Shares. Which component in Linux is responsible for interacting directly with the device hardware shell?Kernel. The core of the Linux system, the kernel handles network access, schedules processes or applications, manages basic peripheral devices and oversees all file system services. The Linux kernel is the software that interfaces directly with the computer hardware.
Which component in Linux is responsible for interacting directly with the device hardware command interpreter?The Linux® kernel is the main component of a Linux operating system (OS) and is the core interface between a computer's hardware and its processes. It communicates between the 2, managing resources as efficiently as possible.
Which component in Linux is responsible for interacting directly with the?As per the architecture of the Linux system, Kernel is the core component of the operating system. It is responsible for interacting directly with the device hardware. It is only because of the kernel of the operating system, all the major activities are possible to take place in the operating system.
Which component in Linux is responsible for interacting directly with the device hardware* command interpreter command line interface shell kernel?Answer. Kernel is responsible for interacting directly with device hardware.
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Which component in linux is responsible for interacting directly with the device hardware?
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