Linux
A structured guide to diagnosing Linux performance problems layer by layer — from application and kernel, through filesystem and block devices, to the network stack, CPU scheduler, memory, and hardware. Covers classic tools alongside eBPF/BCC utilities and notable open-source monitoring projects.
Linux
A personal account of switching from Windows 11 to Artix Linux, covering the frustrations with telemetry and instability that prompted the move, the distro selection process, technical challenges encountered, and unexpected benefits discovered along the way.
Linux
Through hands-on QEMU experiments, the author demonstrates that the Linux kernel is simply an executable file — demystifying it by booting a bare kernel, then providing it with a custom Go-based init process.
Linux
A hands-on guide to building a minimal 2.5 MB Linux distribution for UEFI x86_64 from source, using only the kernel, BusyBox, and a custom init script — no Buildroot or specialized tools required.
Linux
The story of submitting a first patch to the Linux kernel — adding media key support for a 20-year-old Fujitsu Lifebook S2110, from debugging the driver to getting the patch merged into Linux 6.15 and backported to all LTS versions.
Linux
We discussed the theoretical basis of DNS caching in Linux in first part , where they talked about the work of the name resolution process - from calling getaddrinfo() to obtaining an IP address. Second part was devoted to the various levels of caches of the system itself, applic
Linux
A detailed walkthrough of the DNS resolution chain in Linux, from the getaddrinfo() call through NSS, glibc/musl, libresolv, and resolv.conf, with a practical strace analysis of curl.
Linux
Since 2007, a Linux kernel bug has caused full system freezes under heavy memory pressure — and mainstream developers still refuse to fix it. This article documents porting the unofficial l9ec working-set protection patch to Xanmod kernel 6.14.5.
Linux
The author of sane-airscan and ipp-usb — two packages included in virtually every Linux distribution — shares a candid account of building, debugging, and promoting open source software that became the standard for driverless scanning on Linux.
Linux
A sysadmin investigates a hacked server and discovers a recompiled nginx binary that silently replaces Cyrillic characters with Latin lookalikes — but only for search engine bots — to sabotage SEO rankings.
Linux
A comprehensive guide to advanced OpenSSH features: key management, file copying, SSHFS, remote execution, aliases, X-server forwarding, SOCKS proxy, port forwarding, nested tunnels, reverse SOCKS proxy, L2/L3 tunneling, and agent forwarding through untrusted servers.
Linux
A comprehensive overview of practically all *top utilities for Linux — atop, iotop, htop, powertop, iftop, and many more — explaining what each one does and when to use it.