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. …

In this post explico cómo intento que Tvheadend use las capacidades de transcodificación (encode y decode) por Hardware ofrecidas por Intel Quick Sync Video (por ejemplo en sus NUC’s). El objetivo es que los streams de video utilicen mucho menos ancho de banda. Pensaba que NO me iba a hacer falta debido a mi caso de uso (Tvheadend para ver canales iptv en un entorno sin problemas de ancho de banda, router Linux + Fibra y clientes raspberry con Kodi por cable Ethernet)… …

I need to be able to open a program by pressing a HotKey, regardless of which application has focus. Applications typically don’t come with this option but there are cases where it could be useful. …

In this post I describe how to provide a file sharing service over the network with SMB2 (Samba). It’s a very simple example, with a Linux machine as the server and a Mac OSX as the client. I have another post about SMB and QNAP that is very similar. …