Sec2John

Técnico en Desarrollo y Ciberseguridad

> Llevo más de 15 años viviendo en Linux profesionalmente y aún sigo en el viaje.
No importa cuál es tu background técnico: Linux es la base. Domina la línea de comandos, automatiza con bash scripting y descubre Linux real conmigo.

¡Únete!

Contenido Indexado

Soy tan majo que te indexo aquí (casi)todos mis recursos...

TÍTULO FECHA TAGS LINKS
CmdChallenge #38: Hombre Reptil
¿Sabes contar líneas con tabuladores en un fichero de texto? (2 soluciones)
2024-03-26 #cmdchallenge #cat #grep #awk
Exercism: Tutorial de instalación en local
Tutorial para instalar exercism en nuestro Linux local, configurar visual studio Code, resolver un ejercicio (codificar, pasar pruebas) y subirlo a la plataforma.
2024-03-25 #exercism #configuracion #source #shellcheck #bats
Linux Explained: SUDO
Comando sudo explicado
2024-03-24 #linux_explained #sudo
Exercism #2: Two-Fer
Ejercicio sencillo, if-else para entregar una segunda galleta a un amigo en la cola de la panadería
2024-03-23 #exercism #bats #if
¿Cómo encuentro todos los directorios donde el usuario actual puede escribir?
La variable de entorno PATH en Linux contiene rutas de programas donde si podemos escribir abusaremos del sistema. Forjamos el comando que nos lista en qué directorios podemos escribir con el usuario actual
2024-03-21 #path_abuse #ciberseguridad #path #which #tr #find #command_substitution
#!Bash 15 - Globbing o Expansion de nombres de fichero
#!Bash 15 - Uso del asterisco (*), el interrogante (?) y los corchetes [...]. Hablamos de clases de caracteres y rangos.
2024-03-13 #bash_serie #bash #scripting #* #? # #shell_expansion #filename_expansion
Exercism #1: Hello World
Ponemos a punto el entorno para resolver los ejercicios propuestos por esta plataforma. Resolvemos en local el 01, pasamos tests con Bats y lo subimos.
2024-03-19 #exercism #bats #echo
CmdChallenge #37: Rana
¿Puedes llegar a imprimir el contenido de un fichero contenido en un directorio juguetón ./.../ /. .theflag.txt? (3 soluciones)
2024-03-18 #cmdchallenge #cat #shell_expansion #filename_expansion #> #find
Linux Explained: Permiso especial SUID explicado
Permiso especial SUID explicado
2024-03-17 #linux_explained #permisos_especiales #suid
¿Cómo encuentro todos los ficheros ejecutables del usuario actual?
Comando directo para encontrar todos los ficheros ejecutables interesantes (excluidos los del sistema operativo) del usuario actual. Ideal para buscar opciones para una escalada de privilegios.
2024-03-14 #privilege_escalation #ciberseguridad #stat #find

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Sobre mí

Hola, me llamo Juan y soy técnico en ciberseguridad. Tengo años de experiencia como analista de amenazas, investigador forense y desarrollador de software - adoro scrum.

Llevo un tiempo creando contenido poniendo el foco en Linux, el terminal, Bash scripting y ciberseguridad con un toque de humor.