In this category, you can see all articles related to Unix or Linux operating System.
Networking & Firewall (Ss/Netstat/Iptables/Nftables/Curl) Stop wondering if your local service is actually listening on all interfaces 🧩 The Challenge Spent three hours tearing my hair out trying to connect to...
Cloud-Native Linux (Cloud-Init, Immutable OS, Bootc) Don’t let your bootc images drift while your cloud-init scripts watch Technical Briefing | 7/18/2026 You built your golden image with bootc, pushed it...
Shell Scripting / Bash Tricks Stop fighting over complex logic in your bash scripts 🧩 The Challenge Trying to handle a dozen different state checks inside a nested if-then-else block...
Disk & Filesystem Management (Du/Df/Lsblk/Fstrim) Stop wondering why your mount points are hiding their true size 🧩 The Challenge Ever been paged because a disk is supposedly full, but `df`...
DevOps Tooling On Linux (CI/CD Runners, Ansible) Stop your Ansible runs from leaking secrets into the local process list Technical Briefing | 7/17/2026 You probably think your secrets are safe...
SSH & Remote Administration Stop leaving your SSH agent keys hanging around on jump hosts 🧩 The Challenge You’ve probably SSHed into a jump box, forwarded your agent, and then...
Backup & Recovery (Rsync/Tar/Dd) Stop rsync from choking when it hits files currently being modified 🧩 The Challenge You ever try to rsync a live database or a logging directory...
Filesystem & Storage (ZFS/Btrfs/LVM) Stop letting Btrfs reclaim your free space in the background Technical Briefing | 7/17/2026 I watched a production box crawl to a halt last week during...
Text Processing (Grep/Sed/Awk) Extract specific JSON fields without installing bulky parsers 🧩 The Challenge Dealing with JSON API responses on a minimal server where you can’t install jq is a...
Disk & Filesystem Management (Du/Df/Lsblk/Fstrim) Stop getting lied to by df and du 🧩 The Challenge You ever deleted a massive log file to clear up space, only for your...