Most Linux servers run just fine with RAM alone until they do not. When processes briefly spike or a database…
When an app misbehaves in production, the fastest clues usually live in plain-text log files. Most Linux servers—including a small…
Most Linux servers appear “low on RAM” at first glance because the kernel aggressively uses spare memory to cache files…
Shipping small web services often starts with copying files to a remote server and running a few commands by hand.…
Most Linux performance triage starts with two tools you already have: ps for one-shot snapshots and top for an updating…
If you run a Linux server for more than an afternoon, you’ll want things to happen without you staring at…
You boot a new Ubuntu server and everything that listens is reachable from the internet. That is the default. Uncomplicated…
You can run a stable, secure Virtual Private Server (VPS) with a small toolkit of command-line skills. You will sign…
Secure Shell (SSH) gives you an authenticated, encrypted way to run commands, copy files, forward ports, and use Git over…