System & Network Admin

Optimize your boot times with Docker!

(For Chinese readers) 插播一则通知！好久没有更新博客了。今年我将会重新开始发表一些技术笔记，但是由于我目前居住在美国等原因，大部分的新博文将会以英文撰写。带给大家的不便我深...

Log files are nothing more than text files containing a series of information about the Linux kernel, boot process, user logins, system logs, and so on.

Use this comprehensive Tmux cheat sheet covering all essential commands. Plus a bonus cheat sheet search and copy function.

In this article, we will show how to lock a user or root account after a specifiable number of failed login attempts in CentOS, RHEL and Fedora distributions.

There are plenty of icon sets for Linux to radically change your desktop's looks. Let's see some beautiful Linux icon themes to upgrade your OS's looks.

Six months ago, I advocated for everyone to stop using .env files. Since then, I’ve published more articles on this arena and have learned…

This tutorial will walk you through installing and configuring Snort IDS on a Linux server to improve the security of your network.

Please, please, please do not actually install XP and use it. But if you must…

TL;DR – WebVM is a Linux-like virtual machine running fully client-side in the browser. It is based on CheerpX: a x86 execution engine in WebAssembly by Leaning Technologies. With today’s update, you can deploy your own version of WebVM by simply forking the repo on GitHub and editing the included Dockerfile. A GitHub Actions workflow...

Bernd Schubert led a session at the 2023 Linux Storage, Filesystem, Memory-Management and BPF Summit on the intersection of FUSE and io_uring. He works for DDN Storage, which is using FUSE for two network-storage products; he has found FUSE to be a bottleneck for those filesystems. That could perhaps be improved by using io_uring, which is something he has been working on and wanted to discuss.

On most IPv6-enabled networks, network addresses are distributed via stateless address autoconfiguration (SLAAC).

Configure NGINX as a reverse proxy for HTTP and other protocols, with support for modifying request headers and fine-tuned buffering of responses.

Basic username and password authentication is an easy and simple way to secure administrative panels and backend services. Nginx can be configured to protect certain areas of your website, or even used as a reverse proxy to secure other services.

Nginx is one of the most popular web servers in the world. In this guide, we will discuss how Nginx selects the server and location block that will handle a given client’s request. We will go over the algorithm in place, as well as the directives and options you can use to modify the selection process.

How to add HTTP header (-H, --HEAD) or multiplie headers in cURL. How to set authorization header. Examples.

Learn to make an HTTPS connection using curl.

In this tutorial learn How to Find your IP address using a Linux OS. Simple guide for checking internal and external IP addresses on a Linux system.

Discover the differences between VPS and VPN, as we demystify these words and guide you in choosing the right solution for your online needs.

Wayland has been around for a while and is hailed as the much better alternative to X11. Learn what Wayland is, how it works, and how to use it