The kernel primitives, init systems, and tooling behind the world's most-deployed OS.
b4 turned lore.kernel.org message IDs into reproducible patch-series workflows while preserving email review, trailers and maintainer control.
The December 2020 CentOS Linux timeline change moved focus to Stream, ended CentOS 8 updates in 2021, and prompted Rocky and AlmaLinux.
IBM announced its Red Hat agreement on October 28, 2018 and closed it July 9, 2019 for $190 cash per share and roughly $34 billion equity value.
How the kernel community's often-combative culture led to a September 2018 policy change, and Torvalds' own public acknowledgment his conduct needed to change.
Announced by Torvalds in September 2024 and landing in kernel 6.12, PREEMPT_RT ended two decades as an out-of-tree patchset needing a custom kernel build.
Canonical's September 2021 decision to extend Ubuntu 14.04 and 16.04 LTS support to a full decade, and what it signaled about its long-term LTS commitment.
Distinguish global, cgroup, cpuset and policy-driven OOM events; interpret victim scoring and build memory controls from forensic evidence.
Understand Linux page-cache reads, buffered writes, dirty throttling and durability boundaries without confusing write completion with stable storage.
Trace Linux hardware from kernel device registration through sysfs, uevents, devtmpfs and udev rules to stable, collision-tested user-facing links.
A kernel update leaves the system unable to boot into any menu entry — how to regenerate a working GRUB2 configuration from a rescue environment.