Tag: sysadmin

Bulk rename files in bash

Remove spaces and special characters from filenames using bash loops, rename, find, and parameter expansion tricks.

When systemd swallows your service logs

Service restart not showing logs? systemd hides stdout. Learn journalctl, systemctl status, and debugging workflows for silent systemd failures.

SSH keys and secure file copy

Generate SSH keys, set up passwordless auth, configure SSH, and transfer files securely with SCP — the foundation of headless Linux work.

Alert Fatigue: Why Your Alerts Are Meaningless

You get 50 alerts a day and ignore all of them. That's not monitoring — that's noise. Here's how to build alerts people actually care about.

MySQL & MariaDB CLI in 2026: What Changed

MySQL 8.0 broke auth, MariaDB forked hard, and Docker changed how you connect. Here's what still works and what'll bite you.

Vault vs Infisical: Secrets Management for Teams Who've Learned the Hard Way

HashiCorp Vault vs Infisical compared: secrets management for DevOps teams, Docker Compose setup, SDK examples, and when complexity is worth it.

Running Multiple Ollama Models Without Running Out of RAM

Ollama can load one model at a time on limited hardware. How to switch between models, use CPU offloading, and manage VRAM intelligently.

Bulk File Renaming on Linux: rename, vidir, fd

Master bulk file renaming on Linux with rename, vidir, fd, and mmv. The right tool for every scenario from regex rewrites to visual editing.

Disk Space Tools in 2026: Beyond du and df

du and df still work, but Rust-era tools like dust, duf, and fclones make disk triage faster and way less painful in 2026.

Self-Hoster's Disaster Recovery: When Everything Goes Wrong at Once

Build a real disaster recovery plan for your home lab: RTO/RPO explained simply, 3-2-1 backup rule, Proxmox backups, Restic to Backblaze B2, and a runbook template you'll actually use.

Compression in 2026: zstd Changed the Game

zstd is as fast as gzip with near-xz compression ratios. Here's why you should drop bzip2 forever and how to use zstd in 2026.

Ollama Memory Management: Why Models Keep Loading

Why your GPU fills up with Ollama. How to inspect VRAM, tune keep-alive, force-unload models with a single request, and stop the reload pain in 2026.