🎯 Keep Calm and Code in Python! 🐍

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🎯 Keep Calm and Code in Python! 🐍

Si la depuración es el proceso de eliminar errores de software, entonces la programación debe ser el proceso de ponerlos. — Dijkstra.

nullx5 / .bash_aliases

Created July 8, 2019 20:22 — forked from vratiu/.bash_aliases

Git shell coloring

	# Customize BASH PS1 prompt to show current GIT repository and branch.
	# by Mike Stewart - http://MediaDoneRight.com

	# SETUP CONSTANTS
	# Bunch-o-predefined colors. Makes reading code easier than escape sequences.
	# I don't remember where I found this. o_O

	# Reset
	Color_Off="\[\033[0m\]" # Text Reset

nullx5 / challenge-catwalk.html

Created March 9, 2020 22:52

Challenge Catwalk | khanacademy

	<!DOCTYPE html>
	<html>

	<head>
	<meta charset="utf-8">
	<title>Challenge: Catwalk</title>
	<style>
	#cat {
	position: absolute;
	left: 0px;

nullx5 / git apuntes.txt

Last active April 12, 2025 01:09

	#No modifiques commits publicos
	#NUNCA RESCRIBIR LA HISTORIA DE RAMAS PUBLICAS(push) - SOLO HACERLO EN RAMAS LOCALES (git rebase \| git commit --amend)
	#HEAD es normalmente el ultimo commit del repositorio(master o main), si no te has movido a otro lado
	#Los commits normales tienen un solo padre, un merge tiene 2 padres.
	https://www.youtube.com/watch?v=Uszj_k0DGsg
	https://www.freecodecamp.org/news/git-sim/
	https://learngitbranching.js.org/
	https://runestone.academy/ns/books/published/opensource/sec_git_branching.html?mode=browsing

	herramientas visuales:

nullx5 / .gitconfig

Last active October 28, 2021 11:44

git alias ~/.gitconfig

	[alias]
	a = add # Add file contents to the index
	ai = add --interactive # Add modified contents in the working tree interactively to the index.
	##############
	b = branch
	ba = branch --all # List both remote-tracking branches and local branches.
	bav = branch --all --verbose # When in list mode, show sha1 and commit subject line for each head, along with relationship to upstream branch (if any)
	bd = branch --delete # Delete a branch. The branch must be fully merged in its upstream branch, or in HEAD if no upstream was set with --track or --set-upstream-to.
	bdd = branch -D # Shortcut for --delete --force.
	bm = branch --move # Move/rename a branch and the corresponding reflog.

nullx5 / docker apuntes.txt

Last active August 29, 2024 03:39

	Dockerfile -> build -> IMAGEN -> run -> CONTENEDOR

	sudo apt install docker.io docker-compose
	Acceso a internet dentro de los contenedores basados en debian/ubuntu, ejemplo mariadb imagen:
	sudo apt update; sudo apt upgrade -y
	sudo apt install iputils-ping
	sudo apt install iproute2
	####################################################################
	dive: A tool for exploring each layer in a docker image https://blogs.cisco.com/developer/container-image-layers-1
	$ dive stage0:latest

nullx5 / vagrant apuntes.txt

Last active May 15, 2022 06:23

	VAGRANT terminos:

	Box (recomendadas: hashicorp, debian*)
	Vagrantfile (define el tipo de máquina, cómo configurarla y aprovisionarla)
	Provider (virtualbox, vmware, hyper-v, qemu)
	Provisioner (permite instalar y configurar software dentro de la VM, shell, chef, puppet, ansible)

	VAGRANT Comandos Basicos:
	vagrant version
	vagrant --help

nullx5 / DHCP Router Cisco.txt

Last active July 22, 2022 04:44

Configurar DHCP router cisco multiples interfaces

	## Configurar DHCP router cisco multiples interfaces
	### Comandos

	enable
	conf t

	int g0/0
	ip address 192.168.1.1 255.255.255.0
	no shut
	exit

nullx5 / Configurar SSH Switch CISCO.txt

Last active June 28, 2024 20:29

Configurar Acceso Remoto SSH Switch Cisco entre distintos segmentos de red

	## Habilitar acceso remoto SSH a switch cisco

	enable
	conf t
	hostname SW-1

	enable secret class

	line console 0
	password cisco

nullx5 / https letssncrypt cerbot apache

Last active December 6, 2022 22:10

	Configurando HTTPS letsencrypt con cerbot en apache
	###########################################################
	sudo snap install --classic certbot
	sudo ln -s /snap/bin/certbot /usr/bin/certbot
	sudo certbot --apache
	###########################################################
	REDIRECIONAR HTTP A HTTPS
	/etc/apache2/sites-available/000-default-le-ssl.conf

	NameVirtualHost *:80

nullx5 / Hardening SSH.txt

Last active May 13, 2025 00:51

	#CREAR NUEVO USUARIO Y AGREGARLO AL GRUPO SUDO:
	sudo adduser [USER]
	sudo usermod -aG sudo [USER]
	id [USER]

	#GENERAR LLAVES SSH EN LOCAL Y ENVIARLAS AL SERVER:
	ssh-keygen -b 4096 -t rsa
	ssh-copy-id -i ~/.ssh/id_rsa.pub [USER]@[IP]

	#VERIFICAR QUE SE SUBIO LA LLAVE: