Linux – Page 4 – ITFROMZERO – Share tobe shared!

Speed Up Linux: Optimize I/O by Moving ‘Hot’ Data to RAM with tmpfs

By admin June 29, 2026

No matter how fast your disk is, RAM is hundreds of times faster. This guide walks you through using tmpfs to move temporary data into RAM, cut I/O Wait, and instantly speed up your Linux server.

Fedora

Setting Up Samba Server on Fedora: Secure File Sharing with Windows Using SELinux and firewalld

By admin June 28, 2026

A comparison of Samba, NFS, and SFTP to help you choose the right file sharing option for a Linux-Windows environment. Focuses on installing Samba on Fedora and correctly handling SELinux contexts, booleans, and firewalld to avoid silent Permission denied errors.

Docker

Buildah: Build OCI Container Images Without Docker Daemon — The Rootless Solution for CI/CD

By admin June 28, 2026

Buildah lets you build OCI container images without a Docker daemon, running completely rootless as a regular user. This guide walks through installation, building with a Containerfile or scripted build, and securely integrating Buildah into GitLab CI and GitHub Actions pipelines.

Network

Building a Stealth VPN with Xray-core and XTLS-Reality on Linux: Traffic That Looks Like Regular HTTPS

By admin June 27, 2026

A complete A-to-Z guide to installing Xray-core with XTLS-Reality on a Linux server — generating keypairs, configuring VLESS, setting up the client, and monitoring. VPN traffic looks like ordinary HTTPS and cannot be detected or blocked by DPI.

Ubuntu

Fix Ubuntu GRUB Errors in 5 Minutes with Boot-Repair: Fast, Reliable, and Secure

By admin June 27, 2026

GRUB menu disappeared after installing Windows? Don't worry. This Boot-Repair guide will help you restore Ubuntu's boot capability in minutes—safely and without data loss.

VMware

VMware Photon OS Deployment Guide: The Optimized Linux for Containers and Cloud-Native Workloads on vSphere

By admin June 26, 2026

VMware Photon OS is a minimal Linux distribution purpose-built for running containers and cloud-native workloads on vSphere. This article shares real-world deployment experience from start to finish: deploying from OVA, configuring networking with systemd-networkd, optimizing Docker, and monitoring across an ESXi cluster.

Git

Secure Git Credentials Management on Linux with Git Credential Manager and libsecret: Auto-save GitHub/GitLab Tokens

By admin June 26, 2026

Compare four methods for storing Git credentials on Linux: store, cache, libsecret, and Git Credential Manager. Practical setup guide based on six months of real-world experience — choose the right approach for your desktop or server environment.

Linux

Linux Compression and Extraction: Don’t Let Your Server Hang by Choosing the Wrong Format

By admin June 25, 2026

Discover how to use tar, gzip, xz, and zstd to optimize Linux server storage. This article provides practical comparisons and tips for monitoring large file compression progress.

Monitoring

Monitor Directory Sizes with Prometheus Folder Exporter: Don’t Wait for a Full Disk to Panic

By admin June 25, 2026

Stop SSHing into servers at 2 AM to find bloated log files. Use Prometheus Folder Exporter to monitor directory sizes and get early alerts.

Network

Scapy: The ‘Heavy Weapon’ for Network Troubleshooting on Linux

By admin June 25, 2026

Don't let basic networking tools limit your debugging capabilities. Learn how to use Scapy to craft custom packets, bypass firewalls, and diagnose the most subtle network issues.