Stop struggling with massive multi-line XML or JSON blobs
Text Processing (Grep/Sed/Awk) Stop struggling with massive multi-line XML or JSON blobs 🧩 The Challenge You ever try to grep a single field out of an XML dump that someone...
Category: Linux/Unix
In this category, you can see all articles related to Unix or Linux operating System.
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Stop getting burned by systemd’s default RestartSec timing
Systemd & Service Management Stop getting burned by systemd’s default RestartSec timing Technical Briefing | 9/30/2026 You spend all afternoon perfecting your service unit, you hit systemctl start, and it...
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Stop mangling your exit codes when piping into a while loop
Shell Scripting / Bash Tricks Stop mangling your exit codes when piping into a while loop 🧩 The Challenge Everyone thinks piping a command into a while loop is fine...
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Stop letting your webhooks die in silence behind silent packet drops
Networking & Firewall (Ss/Netstat/Iptables/Nftables/Curl) Stop letting your webhooks die in silence behind silent packet drops 🧩 The Challenge Dealing with a service that refuses to talk to an external API...
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Find exactly which partition is devouring your SSD space
Disk & Filesystem Management (Du/Df/Lsblk/Fstrim) Find exactly which partition is devouring your SSD space 🧩 The Challenge Everyone has dealt with that 3:00 AM panic when a partition hits 100...
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Peer into another process namespace to see what it is hiding
Container Basics On Linux (Namespaces/Cgroups) Peer into another process namespace to see what it is hiding 🧩 The Challenge Trying to troubleshoot a containerized app that seems to be running...
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Stop ignoring the wreckage left by partial package upgrades
Package Management (Apt/Dnf/Pacman Internals) Stop ignoring the wreckage left by partial package upgrades 🧩 The Challenge You ever run an update only to have it choke halfway through because of...
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Stop blindly trusting tar archives to be error-free
Backup & Recovery (Rsync/Tar/Dd) Stop blindly trusting tar archives to be error-free 🧩 The Challenge Everyone thinks their backup script is solid until they try to restore a mission-critical database...
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Stop relying on cron environment variables you assumed were there
Cron & Task Scheduling (Cron/Systemd Timers/At) Stop relying on cron environment variables you assumed were there 🧩 The Challenge You write a script that works perfectly in your shell, but...
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Stop letting TCP window scaling choke your high-speed transfers
Performance Tuning & Kernel Parameters (Sysctl) Stop letting TCP window scaling choke your high-speed transfers 🧩 The Challenge Dealing with a server that sits on a fast network but still...