In this category, you can see all articles related to Unix or Linux operating System.
Permissions & Security (Chmod/Chown/ACLs/SELinux/AppArmor) Stop letting developers break your permissions with chmod -R 777 🧩 The Challenge You know that feeling when a junior dev realizes a script is failing,...
Networking & Firewalls (Nftables/Iptables/WireGuard) Stop WireGuard from clobbering your main routing table with PeerAllowedIPs Technical Briefing | 8/11/2026 You set up a WireGuard interface, bring it up with wg-quick, and...
Container Basics On Linux (Namespaces/Cgroups) Stop cgroups from turning your server into a brick 🧩 The Challenge You ever have a batch script go rogue and eat every last byte...
Shell Scripting / Bash Tricks Stop variables from expanding when you only want the literal string 🧩 The Challenge You are writing a script to generate a config file and...
Filesystem & Storage (ZFS/Btrfs/LVM) Stop ZFS from eating your RAM until the OOM killer wakes up Technical Briefing | 8/11/2026 You probably installed ZFS for the features like snapshots or...
Process & Resource Monitoring (Top/Htop/Ps/Systemd) Stop ps from truncating your long command lines 🧩 The Challenge Trying to debug a complex Java or Python service, only to find the ps...
Performance Tuning & Kernel Parameters (Sysctl) Stop your TCP stack from drowning in half-open connections 🧩 The Challenge Dealing with a classic SYN flood or just a messy load balancer...
Observability & Logging (Journald, EBPF Tracing) Stop your eBPF kprobes from silently breaking when the kernel changes Technical Briefing | 8/11/2026 You spend all afternoon crafting the perfect eBPF program...
Networking & Firewall (Ss/Netstat/Iptables/Nftables/Curl) Stop your port scans from getting lost in the noise 🧩 The Challenge Dealing with connections that just hang indefinitely is enough to drive anyone up...
Logging & Journald Stop journalctl from hiding those tiny logs you need right now 🧩 The Challenge Trying to debug a service that logs a million lines per second makes...