MacOS doesn’t include an option in Finder to preview Markdown files (.md). There are several solutions available, and one of the quickest and simplest is to install qlmarkdown …

In this post I describe how I set up this static blog “built” with jekyll and hosted on GitHub Pages. The source files are in the repository LuisPalacios.github.io. The site is finally configured on my domain: https://www.luispa.com …

GIT is a distributed, free and open-source version control system, designed to handle everything from small to very large projects with speed and efficiency. It does not depend on a central repository; multiple users can install GIT and communicate with each other without going through a central server. The thing is that would be unmanageable, so “central (remote) servers or repositories” are very useful and necessary, the most famous being GitHub, GitLab and Gitea. …

The goal is to make X11 (X-Window) applications work “also” from root. Making them work from a regular user is straightforward, but then switching to root with su/sudo and having X11 work is not allowed in Linux. The X11 connection only belongs to the user you logged in with via SSH. …

I recently had to move a virtual machine from one of my servers to another on the same network. As always I relied on Google, although it’s a straightforward operation I do almost everything from the shell, so here’s the process for future reference… …

In this post I explain how I launch a network traffic capture (tcpdump) on a remote Linux machine (Pi2 with Gentoo) and have it forwarded to Wireshark running on my computer (Mac). We’ll get tcpdump’s output to become Wireshark’s input. It seems like magic but you’ll see it’s extremely simple. You’ll need to know ssh and sudo, a couple of prerequisites for making this so easy. …