In this category, you can see all articles related to Unix or Linux operating System.
Environment & Shell Customization (Aliases/Functions/.Bashrc) Stop your shell from forgetting your directory context when you switch projects 🧩 The Challenge You know that feeling when you’re juggling three different Git...
Performance Tuning & Kernel Parameters (Sysctl) Stop your high-concurrency apps from dropping packets under load 🧩 The Challenge Dealing with a production app that suddenly starts dropping TCP connections like...
Performance Monitoring & Tuning Stop your disk I/O wait from hiding behind average latency Technical Briefing | 7/29/2026 You see high iowait in top or htop and instinctively reach for...
Logging & Journald Stop journalctl from hiding the real boot errors behind a wall of noise 🧩 The Challenge Dealing with a server that panicked or rebooted at 3 AM...
Disk & Filesystem Management (Du/Df/Lsblk/Fstrim) Stop df and du from telling you different lies about your disk space 🧩 The Challenge You stare at df and see the disk is...
Virtualization (KVM/QEMU/Libvirt) Stop your virtio balloon driver from starving your host memory Technical Briefing | 7/29/2026 You set up a bunch of VMs on a single host and figured memory...
Shell Scripting / Bash Tricks Stop bash variable expansion from breaking your regex 🧩 The Challenge You finally wrote the perfect grep regex with all those backslashes and brackets, only...
Environment & Shell Customization (Aliases/Functions/.Bashrc) Stop your shell history from becoming a fragmented mess 🧩 The Challenge Opening five terminals at once and realizing your history file is completely out...
SSH, Remote Access & Zero Trust On Linux Stop your SSH bastion from becoming a single point of failure Technical Briefing | 7/29/2026 Everyone loves the idea of a bastion...
Backup & Recovery (Rsync/Tar/Dd) Stop tar from silently skipping your symlinks during migrations 🧩 The Challenge Pulled a massive backup of a web root last week only to realize every...