Linux Tutorials
Install ncdu Disk Usage Analyzer on Linux
When the disk is filling up and you need to know what’s eating it, ncdu is the fastest…
Author
Josphat Mutai
Cloud
Understand GCP Costs: 13 Hidden Billing Traps (2026)
Verified April 2026 guide to the thirteen GCP cost traps that burn real money: Cloud NAT, egress, snapshots,…
Cloud
Set Up GCP Workload Identity Federation for GitHub Actions (2026)
Tested guide to configuring GCP Workload Identity Federation for GitHub Actions without JSON service account keys. Pool, provider,…
Debian
Configure /tmp on a Separate Partition or tmpfs on Linux
Putting /tmp on its own filesystem isolates temporary files from the root volume and lets you mount it…
How To
Install dmidecode and Check Hardware Specs on Linux
When you inherit a Linux box with no documentation and need to know what hardware is underneath, dmidecode…
Cloud
Install ArgoCD on GKE: Complete GitOps Tutorial (2026)
Complete tested guide to installing ArgoCD on GKE Autopilot 1.35. Applications, Helm, ApplicationSets, the Autopilot drift trap, AppProjects,…
How To
Convert Video to MP3 on Linux with FFmpeg
FFmpeg is the Linux swiss army knife for audio and video conversion. Ripping the audio track out of…
Debian
Create and Use BtrFS on Linux: Subvolumes and Snapshots
BtrFS is a copy-on-write filesystem with native subvolumes, snapshots, transparent compression, data checksumming, and online resize. It’s the…
Linux Tutorials
Create Local Ubuntu Mirror with apt-mirror
Running a local Ubuntu package mirror is the right move for large fleets, air-gapped environments, and lab networks…
AlmaLinux
Install SELinux Man Pages on Rocky Linux 10
When SELinux blocks something and you need to understand why, the best documentation is sitting in man pages…
Linux Tutorials
Convert VirtualBox VDI to qcow2 with qemu-img
Moving a VM between hypervisors is usually a matter of converting the disk image format. VirtualBox writes to…
Cloud
Google Cloud Secret Manager: Complete Tutorial (2026)
Tested GCP Secret Manager guide covering pricing, IAM, versioning gotchas, rotation via Pub/Sub, regional secrets, CMEK traps, and…