Posts
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Linux File Descriptor Limits: When 1024 Isn't Enough
The 1024 file descriptor limit stops servers under load. What fds are, soft vs hard limits, how to raise them properly, and how to diagnose exhaustion.
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Why Your Docker Logs Are Eating Your Disk
Docker's default JSON logging driver writes unbounded logs to disk. Learn how to set log rotation and reclaim your storage.
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The `at` Command: One-Time Scheduled Tasks in Linux
Schedule one-off Linux tasks with `at` instead of cron. Learn syntax, queue management, batch jobs, and when to use it for delayed reboots and reminders.
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Why Your Docker Container Ignores Ctrl+C
PID 1 in a container ignores signals, so Ctrl+C does nothing and stops take 10 seconds. Fix it with exec form CMD or tini, ranked best to worst approach.
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Understanding and Optimizing Docker’s daemon.json File
daemon.json controls how the Docker daemon behaves, logging drivers, storage drivers, registry mirrors, and the options worth tuning.
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Techniques for Writing Robust, Reliable Bash Scripts
Write bash scripts that don't silently fail, set -euo pipefail, error handling, input validation, and logging patterns for production scripts.
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Disabling Discord’s Activity Tracking
Discord tracks what you're running. Here's how to turn off activity status, game detection, and telemetry so your app habits stay private.
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Optimize Ubuntu Logs: btmp Log Rotation
btmp logs failed logins and grows forever on internet-facing servers. Set up logrotate to keep it under control before your disk fills up.
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Navigating the Storm: Analysis of Intel’s 13th and 14th Gen CPU Instability Issues
Intel 13th and 14th gen CPUs have a documented instability problem. Here's what's happening, who's affected, and what Intel is doing about it.
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Ansible: Task and Role Inclusions for Efficient Automation
Stop copy-pasting Ansible tasks across playbooks, use include_tasks, import_tasks, and roles to keep your automation DRY and maintainable.
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Preserving Bash History in Multiple Terminal Windows
By default bash history is lost across multiple terminal sessions. Fix it with HISTAPPEND and PROMPT_COMMAND so nothing gets overwritten.
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Finding the PID of a Process Using a Specific Port in Linux
Something's squatting on port 8080 and you need to know what. ss, netstat, and lsof one-liners to find the PID behind a port fast.
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