For most people, computers don't stay the same. Software is added, removed, and updated. Configurations are changed. Think about the changes you've made to your computer since the first time you booted it up. Now imagine making those changes to 10, 100, or 1,000 more computers. Configuration management tools are what make implemententing and enforcing these changes possible.

Use these tips and tricks to customize your Fedora installation and keep it running just the way you like it.

por supuesto dan pistas para otras distribuciones

Udev (userspace /dev) is a Linux sub-system for dynamic device detection and management, since kernel version 2.6. It's a replacement of devfs and hotplug

Configure ordering of systemd services

Traditionally, a Linux process is either privileged (running as root) or unprivileged. Privileged processes are not subject to kernel permission checks, and thus have full power over a system. A capability is a distinct and independent privilege that can be used by a process to bypass certain permission checks. Capabilities were first introduced in Linux 2.2, and several more were added in later versions. They are usually set on executable files and are automatically granted to the process when a file with a capability is executed. Capabilities essentially divide the power of the root user into separate privileges, which improves security by limiting the access an attacker would gain by exploiting or abusing a service.

DNF o YUM Dandified es un fork del administrador de paquetes de YUM. Se introdujo en Fedora 18 y 22, ahora se ha convertido en el administrador de paquetes predeterminado para manejar los paquetes RPM.

The best thing about an open source operating system, such as Linux, is that you can customize it as much as you want, ranging from default applications such as file managers, music players, web browsers, and text editors etc. to more vital system components such as the kernel, display managers, and terminal consoles. You can do this simply by downloading new application software and replacing the old ones with that, or editing system components by making changes in the source code of your operating system. The display manager is one such system component that you can replace simply by running a few commands mentioned in this article.

We might have multiple web browsers installed on our Ubuntu which we might want to use for different browsing preferences. However, there is always a favorite web browser that we want to use 90 percent of the times for regular Internet use. It is best to have that browser set as the default web browser for your Ubuntu system. This default browser is the one that will open links that you click from any UI application, and this is the one that will open when you enter x-www-browser in your Ubuntu command line.

Is your Linux setup not as speedy as you'd like? Here's how to speed it up.

Have you ever wondered why your Linux computer is running slow these days? Despite high transmission speed and powerful hardware, it still takes forever in executing or processing services or applications.

Regular system maintenance is necessary to make the system healthy and function properly over a period of time. It's common for all the operating systems not only for Linux systems.

While CentOS/RHEL platforms maintain several official repositories (e.g., base, updates, contrib), they are lacking in terms of software coverage and release cycles. To bridge the gap between what is available and what is commonly needed, third-party repositories are created to serve community needs for commonly requested software packages.

One such third-party software repository for CentOS/RHEL is ELRepo (The Community Enterprise Linux Repository). ELRepo is actually one of few "community-approved" repositories due to its high maintenance quality.

Uno de los problemas actuales en el mundo GNU/Linux es la fragmentación. Fragmentación no solo en lo que a distribuciones se refiere, si no también a entornos de escritorio y por supuesto a la distribución de aplicaciones.

Así existen diferentes formatos en los que se distribuyen las aplicaciones dependiendo de la distribución que utilices. Así por ejemplo, Debian y derivados utilizan .deb, mientras que Red Hat utiliza .rpm. No son los únicos formatos, hay mas, por supuesto...

Spacewalk manages software content updates for Red Hat derived distributions such as Fedora, CentOS, and Scientific Linux, within your firewall. This is the open source version of RedHat satellite 5.We do have RedHat satellite 6 and the open source version is katello. I will show you in detail of how to configure that in detail in my next tutorial. Spacewalk is a very powerful tool when it comes to manage the infrastructure and is really stable and well build.

As I’m sure you already know, there are plenty of ways to install software in Linux: using the package management system provided by your distribution (aptitude, yum, or zypper, to name a few examples), compiling from source (though somewhat rare these days, it was the only method available during the early days of Linux), or utilizing a low level tool such as dpkg or rpm with .deb and .rpm standalone, precompiled packages, respectively.

APT is package manager which handles debian packages (.deb). Linux distributions like Ubuntu, Debian uses APT whereas Red Hat, CentOS uses YUM. Package repository is index of packages which can be used to search, view, install & update packages for Linux In this article we will be walking though steps to configure local APT repository.

This guide will show how to configure a local repository server based on Ubuntu Bionic, but it can be adapted to a previous version of Ubuntu or even to any distribution using Aptitude as the main package management system, like Debian or Mint. You might typically want to setup a local repository to save Internet bandwidth.

Today, a friend of mine asked me how to check the latest available version of a package in the Ubuntu repositories. He just wanted to know the package's version without installing it. I never knew that before, so I immediately went to askubuntu forums, and search for the answer. This is my first preferred site where I regularly search for Ubuntu related help. Luckily, someone has already asked the same question, and got the solution. I wanted to share those instructions for the OSTechNix readers, and keep it myself for future reference.

As you probably know GRUB 2 is default boot loader for most Linux operating systems. GRUB stands for GRand Unified Bootloader. GRUB boot loader is the first program that runs when the computer starts. It is responsible for loading and transferring control to the operating system Kernel. Then, the Kernel takes charge, and initializes the rest of the operating system.

In this tutorial, we will be discussing about configuring some important GRUB2 Boot Loader's settings Ubuntu 16.04 LTS desktop. I tested this guide in Ubuntu 16.04 LTS desktop, however these instructions might work on all Linux operating systems that uses GRUB 2 boot loader.

Para reinstalar grub tenemos 4 opciones, las tres primeras hacen referencia a Ubuntu y derivados de Debian, en el ultimo apartado tenemos la opción para Arch o Antergos:

Software que se usa en modo live CD y nos saca del apuro cuando necesitamos reparar grub en nuestro equipo, ya sea porque lo rompimos, o formateamos la partición con Windows y nos voló Grub, esta simple y potente herramienta nos saca del apuro.

En este artículo me gustaría mostraros una herramienta que me ha salvado la vida muchas veces (y las que quedan) cuando he tenido problemas con el grub de GNU/Linux al instalar Windows. Para quien quiera tener dual-boot con Windows y Linux, le recomiendo primero instalar Windows y luego Linux, ya que si es al revés, Windows romperá el arranque de Linux y tendréis que leer este tutorial para saber cómo arreglarlo. ¡Esperamos que eso nunca pase!

Alguna vez puede pasar que perdamos el arranque o grub de nuestro querido Ubuntu, esto puede pasar por varias razones, pero una de las más comunes suele ser que:
Tengamos instalado windows en una partición y ubuntu en otra.
De pronto windows falla y tenemos que formatearlo para instalarlo de nuevo (vaya sorpresa).

No pasa nada, cogemos nuestro disco de instalación de Ubuntu (Live-CD), que debe de ser el mismo con el que instalamos Ubuntu (para trabajar con la misma versión del grub).

Los nuevos BIOS están protegidos contra los rootkit malware's mediante la tecnología UEFI... esto genera inconvenientes y obstáculos a la hora de instalar Linux,

El Secure Boot es una de esas funcionalidades que solo sabe qué existen cuando quieres desactivarlo. Si no, es bastante poco probable que hayas oído hablar de él alguna vez. Pues bien, Secure Boot es una opción que vino en las placas base UEFI, las que sustituyeron a la BIOS y que impedía, e impide, la ejecución de cualquier software no firmado o certificado. Esto, en teoría, impediría instalar distribuciones Linux, aunque actualmente esto no es del todo cierto.

Aquí hay más opciones para que quede aún más confundido... pero también los prós y contras de cada una

Cuales son las diferencias entre estos 3 forks del gnome original

9 Linux desktop environments to watch in 2016

A desktop environment is a collection of disparate components that integrate together. They bundle these components to provide a common graphical user interface with elements such as icons, toolbars, wallpapers, and desktop widgets. Additionally, most desktop environments include a set of integrated applications and utilities.

this article extends that survey with 3 other desktops: Pantheon, Trinity Desktop Environment (TDE), and LXDE. We examine their features, user experience, resources footprint, extensibility, and documentation, and compare them to the 9 desktops covered in the original article.

18 razones para usar Gnome en su cumpleaños 18

Para quienes quieran engallar su gnome Sell con widgets que facilitan la vida, he aquí el artículo donde los guían en sus primeros pasos

So you have a shiny new HiDPI screen, and you want to use it with Linux. The bad news is there isn't a one-size-fits-all solution. Each desktop environment handles scaling differently. The good news is there is a way to handle HiDPI displays on each of the major Linux desktop environments.

An RPM package contains a set of files, typically compiled software binaries, libraries, and their development source files. These files are packaged in a cpio archive format, and finally wrapped in an RPM file along with any necessary package-specific metadata.

How do I find out what files are in RPM package called gnupg using command line option? How do I list the contents of a package using rpm or yum command on CentOS/RHEL/Fedora/Red Hat/OpenSuse/Novell Suse Linux?

What are snaps and why you should use them? The Linux ecosystem has suffered from an old problem since the dawn of the concept of 'distribution', and that problem is fragmentation. One of the biggest issues that cause this fragmentation is different package formats; I can't run my .debs on my Fedora system or my .rpms on my Ubuntu machine.

Bluetooth is still very important in the world today given that a wide range of devices rely on its protocol to perform various operations. Most laptops come with built-in Bluetooth adapters, but even if yours doesn't, external Bluetooth dongles are cheap and plentiful in supply.

Una herramienta para ahorrar batería del portatil

I’ve learned many simple and quick Linux tips and tricks over the past few years and decided to share one at a time via our blog. Today we are going to learn how to disable suspend and hibernation in Linux. Before we get into the topic, let us see the brief introduction to suspend and hibernate modes in Computer.