In this category, you can see all articles related to Unix or Linux operating System.
Process & Resource Monitoring (Top/Htop/Ps/Systemd) Stop wasting time hunting for the specific child of a runaway process 🧩 The Challenge You know that feeling when you’ve got a giant parent...
Networking & Firewall (Ss/Netstat/Iptables/Nftables/Curl) Stop guessing which socket is hogging your ephemeral ports 🧩 The Challenge Dealing with a service that suddenly stops accepting connections because it ran out of...
Text Processing (Grep/Sed/Awk) Stop trying to pick columns in awk by counting spaces 🧩 The Challenge Dealing with logs or command output where the columns aren’t perfectly aligned is a...
Networking & Firewall (Ss/Netstat/Iptables/Curl) Stop letting your curl requests fail without knowing which interface they chose 🧩 The Challenge Dealing with multihomed servers is a nightmare when you’re trying to...
Security Hardening (SELinux/AppArmor/Auditd) Stop letting auditd logs fill your disk and crash your node Technical Briefing | 9/29/2026 We all know auditd is a requirement for compliance, but nobody warns...
User & Group Management Stop letting your system accounts log in and ruin your day 🧩 The Challenge Setting up a service account for a web app and realized too...
Performance Tuning & Kernel Parameters (Sysctl) Stop letting your network buffer bloat destroy your latency 🧩 The Challenge Dealing with a web server that suddenly turns into molasses whenever a...
SSH & Remote Administration Ditch the double-hop SSH and jump right in 🧩 The Challenge Ever had to SSH to a bastion host, then SSH *again* from there to your...
Process & Resource Monitoring (Top/Htop/Ps/Systemd) Stop scrolling through ps aux to find runaway child processes 🧩 The Challenge Dealing with a zombie-spawning web server is a nightmare when the parent...
Shell Scripting / Bash Tricks Stop worrying if your background jobs actually finished 🧩 The Challenge You trigger a bunch of heavy cleanup scripts in the background and then realize...