The classic Unix script command records your terminal sessions to a file—perfect for change logs, incident notes, reproducible runbooks, and support handoffs (as long as you treat the output like sensitive data).
Apache and Nginx power a huge share of the modern web, but they were born in very different eras to solve very different problems. This article traces their histories from NCSA HTTPd and the C10k problem through to today’s hosting stacks, then compares their architectures, strengths, weaknesses, and ideal use cases.
Systemd can do more than just start and restart services. With unit conditions like ConditionPathExists, you can make services environment-aware: skip jobs on cloned hosts, only run backups when a volume is mounted, or gate first-boot tasks — all without shell wrappers.
/etc/resolv.conf is a tiny file with an outsized impact: it tells your Linux resolver which DNS servers to use, how to build hostnames, and how aggressive to be with retries and timeouts. This guide walks through its history, modern management with systemd and network managers, and practical tips for troubleshooting DNS.
When you restore an AWS EBS snapshot onto the same Linux server, the cloned filesystem shares the original UUID—and that can trick your system into booting from the wrong disk. This guide walks through a safe, repeatable process to mount snapshot-based volumes, reset their UUIDs, and restore files without risking your root filesystem.
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