initramfs: The Initial RAM Filesystem Explained
Deep dive into initramfs (initial RAM filesystem), understanding the Linux boot process, early userspace, and how the kernel transitions from boot to the real root filesystem.
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Linux & Operating Systems
Deep dive into Linux internals, boot process, kernel concepts, and system architecture.
18
Concepts
All Linux & Operating Systems Concepts
Filesystems: The Digital DNA of Data Storage
Explore how filesystems work through beautiful interactive visualizations. From the VFS abstraction layer to modern CoW filesystems like Btrfs and ZFS. Understand the magic behind storing and retrieving your data.
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Inodes: The Hidden Metadata That Powers Every File
Discover inodes through interactive visualizationsāthe invisible data structures that track everything about your files except their names. Learn why running out of inodes means no new files, even with free space!
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FUSE: Filesystem in Userspace Explained
Understand FUSE (Filesystem in Userspace) - the framework that lets you implement filesystems without writing kernel code. Learn how NTFS, SSHFS, and cloud storage work on Linux.
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ext4: The Linux Workhorse Filesystem
Deep dive into ext4 (fourth extended filesystem) - the default filesystem for most Linux distributions. Learn about journaling, extents, and why ext4 remains the reliable choice.
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NTFS on Linux: Windows Filesystem Support
Understand NTFS (New Technology File System) and how Linux provides support through NTFS-3G FUSE driver. Learn about MFT, alternate data streams, and cross-platform challenges.
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Btrfs: Modern Copy-on-Write Filesystem
Explore Btrfs (B-tree filesystem) - the modern Linux filesystem with built-in snapshots, RAID, compression, and advanced features for data integrity and flexibility.
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ZFS: The Ultimate Filesystem
Deep dive into ZFS (Zettabyte File System) - the most advanced filesystem with unmatched data integrity, pooled storage, snapshots, and enterprise features.
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XFS: High-Performance Filesystem
Explore XFS - the high-performance 64-bit journaling filesystem optimized for large files and parallel I/O. Learn why it excels at handling massive data workloads.
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FAT32 & exFAT: Universal Filesystems
Understand FAT32 and exFAT - the universal filesystems for cross-platform compatibility. Learn their limitations, use cases, and why they remain essential for removable media.
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RAID: Redundant Arrays for Speed and Safety
Master RAID storage through interactive visualizations. Understand RAID 0, 1, 5, 6, and 10 - how they work, when to use them, and what happens during disk failures.
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Linux Process Management: Fork, Exec, and Beyond
Master Linux process management through interactive visualizations. Understand process lifecycle, fork/exec operations, zombies, orphans, and CPU scheduling.
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Linux Memory Management: Virtual Memory, Paging, and Beyond
Explore Linux memory management through interactive visualizations. Understand virtual memory, page tables, TLB, swapping, and memory allocation.
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Linux System Calls: The User-Kernel Interface
Understand Linux system calls through interactive visualizations. Learn how user programs communicate with the kernel, protection rings, and syscall performance.
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Linux Networking Stack: From Packets to Applications
Master the Linux networking stack through interactive visualizations. Understand TCP/IP layers, sockets, iptables, routing, and network namespaces.
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Linux Boot Process: From Power-On to Login
Understand the Linux boot process through interactive visualizations. Learn about BIOS/UEFI, bootloaders, kernel initialization, and the journey to userspace.
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Linux Init Systems: From SysV to systemd
Compare Linux init systems through interactive visualizations. Understand the evolution from SysV Init to systemd, service management, and boot orchestration.
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Linux Kernel Modules: Extending the Kernel at Runtime
Master Linux kernel modules through interactive visualizations. Learn how to load, unload, develop, and debug kernel modules that extend Linux functionality.
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