Sysadmin on Karpoke - Just Another Blog

chroot: el comando que usamos cuando estamos en apuros

Tue, 25 Nov 2025 08:51:39 +0100

Descubre cómo usar chroot para recuperar sistemas, aislar procesos y ejecutar comandos en entornos controlados.

Kill Process on Port: How to Do it in Linux

Thu, 12 Sep 2024 18:59:46 +0100

Knowing how to kill a process on port is beneficial when you are juggling a lot of processes and they all use ports. Learn about it here

» unixmen.com | unixmen.com

vmstat: obtén información detallada sobre el uso de memoria

Wed, 28 Feb 2024 21:30:32 +0100

El comando vmstat (Virtual Memory Statistics) es una herramienta de monitoreo de sistemas indispensable para cualquier administrador de sistemas

» _ voidNull | voidnull.es

I wish Linux exposed a 'OOM kills due to cgroup limits' kernel statistic

Mon, 25 Sep 2023 10:09:16 +0100

I wish Linux exposed a ‘OOM kills due to cgroup limits’ kernel statistic

» utcc.utoronto.ca | utcc.utoronto.ca

netcat: escanear puertos de nuestros servidores

Wed, 03 May 2023 08:35:18 +0100

netcat es una herramienta que nos permitirá comprobar si un puerto está escuchando en un servidor y nos permitirá solucionar problemas de redes.

» _ voidNull | voidnull.es

Cómo enviar/enviar mensajes a iOS y Android desde la consola de Linux

Wed, 01 Feb 2023 22:37:38 +0100

Una de las tareas esenciales para los desarrolladores y administradores de sistemas es recibir una notificación de alerta sobre servicios fallidos o quedarse sin espacio en disco y otras fallas críticas. Veamos cómo enviar o enviar un mensaje directo a un dispositivo móvil con…

» Javier Orovengua | linuxparty.es

30 formas de validar archivos de configuración o scripts en Linux

Tue, 13 Dec 2022 10:59:48 +0100

La verificación y/o prueba de la sintaxis de configuración es un paso clave que se debe realizar después de realizar cambios en el archivo de configuración de una aplicación o servicio o incluso después de ejecutar actualizaciones. Esto ayuda a reducir las posibilidades de que…

» Javier Orovengua | linuxparty.es

GPing (Graphical Ping): Un genial utilitario CLI para SysAdmins

Tue, 06 Dec 2022 11:09:40 +0100

GPing (Graphical Ping) es una útil app CLI e idónea herramienta de administración de servidores para un uso avanzado del comando ping.

» Jose Albert | blog.desdelinux.net

13 Comandos de solución de problemas y configuración de red de Linux

Thu, 03 Nov 2022 00:46:12 +0100

Las computadoras están conectadas en una red para intercambiar información o recursos entre sí. Dos o más computadoras están conectadas a través de un medio de red llamado red de computadoras . Hay una serie de dispositivos de red o medios involucrados para formar una red…

» Javier Orovengua | linuxparty.es

Linux Commands Every Sysadmin Must Know

Sun, 25 Sep 2022 13:13:21 +0100

Linux Commands Every Sysadmin Must Know

» unixmen.com | unixmen.com

Forzar la verificación del sistema de ficheros

Sat, 17 Sep 2022 02:30:53 +0100

En ocasiones nos podemos encontrar que tenemos un servidor con el sistema de ficheros dañado. Esto es debido a que parte de disco se daña, concretamente pueden existir bloques defectuosos.

» _ voidNull | voidnull.es

The state of Python (both 2 and 3) in Ubuntu 22.04 LTS

Sun, 01 May 2022 13:37:33 +0100

The state of Python (both 2 and 3) in Ubuntu 22.04 LTS

» utcc.utoronto.ca | utcc.utoronto.ca

Utiliza zram en Linux y optimiza tu memoria virtual

Fri, 22 Oct 2021 13:39:01 +0100

Utiliza zram en Linux y optimiza tu memoria virtual

» drivemeca.com | drivemeca.com

A couple of Linux top-like programs for network traffic

Fri, 25 Jun 2021 10:42:22 +0100

A couple of Linux top-like programs for network traffic

» utcc.utoronto.ca | utcc.utoronto.ca

Añadir un chivato al ssh cuando alguien hace login

Sun, 28 Mar 2021 03:00:36 +0100

Con tanto ransomware, accesos indebidos a sistemas y demás ataques varios a sistemas, la concienciación de tener los sistemas al día está al día y supongo que

» admin | blackhold.nusepas.com

Command to logout all the users in one command

Fri, 12 Feb 2021 23:16:49 +0100

sudo who | awk

» commandlinefu.com | commandlinefu.com

msmtp: enviar correos electrónicos autenticados des de un servidor

Tue, 02 Feb 2021 16:34:32 +0100

Hace unos años hice un post sobre ssmtp. Éste post es exactamente lo mismo pero enseño a configurar msmtp ya que ssmtp ya no está disponible.

» admin | blackhold.nusepas.com

Cómo resolver un nombre de host a partir de una dirección IP sin utilizar dig

Thu, 26 Nov 2020 16:05:30 +0100

Cómo resolver un nombre de host a partir de una dirección IP sin utilizar dig

» linuxito.com | linuxito.com

Awesome Python Applications: Ajenti

Mon, 23 Nov 2020 16:24:40 +0100

Ajenti Core and stock plugins. Contribute to ajenti/ajenti development by creating an account on GitHub.

» GitHub | github.com

25 bash commands to master for system administration

Sun, 30 Aug 2020 11:05:32 +0100

If you’re new to development, you’ll want to keep these shell commands in your toolbelt for all sorts of handy scripts

» DEV Community | dev.to

Badblocks y e2fsck para buscar sectores defectuosos del disco duro

Sat, 18 Jul 2020 17:12:59 +0100

Badblocks y e2fsck para buscar sectores defectuosos del disco duro

» masgnulinux.es | masgnulinux.es

Más allá de GRUB

Sat, 23 Nov 2019 12:57:00 +0100

GRUB (Grand Unified Bootloader) es un gestor de arranque disponible del proyecto GNU. Un gestor de arranque es muy importante ya que es imposible iniciar un sistema operativo sin él. Es el primer programa que se inicia cuando se enciende el ordenador. El cargador de arranque transfiere el control al núcleo del sistema operativo. GRUB es el gestor de arranque predeterminado para casi todas las distribuciones de GNU/Linux. Esto se debe a que es mejor que muchas de las versiones anteriores de los cargadores de arranque. Pero ¿Hay vida más allá de GRUB?

Linux VS open source UNIX

Sat, 23 Nov 2019 12:15:00 +0100

This is mainstream opinion. Linux is better than anything else and money is poured in constantly, more than in other platforms. And aside this is not true, this is not based in facts but on feelings. Most GNU/Linux distributions are very average on many aspects. The fact they run on many servers on this planet and many developers work on them, doesn’t make them better than ‘X’. They are popular but that’s it.

10 killer tools for the admin in a hurry

Wed, 04 Jul 2018 09:16:00 +0100

Administering networks and systems can get very stressful when the workload < piles up. Nobody really appreciates how long anything takes, and everyone wants their specific thing done yesterday. So it’s no wonder so many of us are drawn to the open source spirit of figuring out what works and sharing it with everyone.

» Opensource.com | opensource.com

Open letter to the Linux World

Sun, 31 Aug 2014 17:34:00 +0100

So, what is systemd? Well, meet your new God. You may have been praying at the alter of simplicity, but your religion is being deprecated. It likely already happened without your knowledge during an upgrade of your Linux box. systemd is the all knowing, all controlling meta-deity that sees all and supervises all. It’s the new One Master Process that aspires to control everything it can - and it’s already doing a lot. It’s what init would look like if it were a transformer on steroids. It’s complicated, multi-faceted, opaque, and supremely powerful.

4 unix commands I abuse every day

Thu, 06 Sep 2012 18:05:00 +0100

A co-worker watched me type the other day and noticed that I use certain Unix commands for purposes other than they are intended. Yes, I abuse Unix commands.

» Tom Limoncelli | everythingsysadmin.com

System Administrator Appreciation Day

Thu, 26 Jul 2012 18:19:00 +0100

System AdministratorAppreciation Dayhis website from its box, installed an operating system, patched it for security, made sure the power and air conditioning was working in the server room, monitored it for stability, set up the software, and kept backups in case anything went wrong. All to serve this webpage.

» sysadminday.com

12 Reasons Why Every Linux System Administrator Should be Lazy

Tue, 24 Jul 2012 18:32:00 +0100

Lazy sysadmin is the best sysadmin –Anonymous

System administrators job is not visible to other IT groups or end-users. Mostly they look at administrators and wonder why sysadmins don’t seem to have any work.

If you see a sysadmin who is always running around, and trying to put down fire, and constantly dealing with production issues, you might think he is working very hard, and really doing his job. But in reality he is not really doing his job.

If you see a sysadmin (UNIX/Linux sysadmin, or DBA, or Network Administrators), who doesn’t seem to be doing much around the office that you can see, he always seem to be relaxed, and he don’t seem to have any visible work, you can be assured that he is doing his job.

Upstart Intro, Cookbook and Best Practises

Mon, 14 May 2012 13:35:00 +0100

The purpose of this document is multi-faceted. It is intended as:

A gentle introduction to Upstart.

A Cookbook of recipes and best-practises for solving common and not so common problems.

An extended guide to the configuration syntax of Upstart.

It attempts to explain the intricacies of Upstart with worked examples and lots of details.

Note that the reference documentation for Upstart will always be the manual pages: this is merely a supplement to them.