What is Linux? Understanding the Kernel, User Space How OS Protects Your System | Simply Byte | Simply Byte
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Linux devices often look like files: open(), read(), write(), close(). But many devices need advanced controls that don’t fit generic system calls. That’s where ioctls (Input/Output Controls) come in. ioctl is the mechanism that lets user space send device-specific commands to kernel drivers, such as configuring modes, enabling features, querying device info, or managing buffers. This is why subsystems like DRM (graphics) and video4linux (camera/video capture) rely heavily on ioctls for detailed
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How Linux🐧 works from pressing power button to final screen❓ Here's a breakdown of the key components and processes involved 🐧 Power On! ⚡ This signifies the start of the process, when the computer is powered on. 🐧 BIOS (Basic Input/Output System) & ROM (Read-Only Memory) 💻 hashtag#BIOS is a firmware program stored in the ROM chip. It performs a Power-On Self Test (POST) to check the basic functionality of the system hardware and then loads the bootloader. 🐧 Boot Loader 🔄 The bootloader is
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