CJ (^-^) chuanjin

Let's configure the mosquitto MQTT broker to use TLS security. There are a few steps needed for self-signed CA and certificates:

Generate a certificate authority certificate and private key.
Generate a server private key and certificate signed by the CA.
Distribute the CA certificate to the server and start mosquitto with the CA certificate and server private key and certificate.
Distribute the CA certificate to the client for server verification.
Start the client with the CA certificate.

If client certificates are required, then:

Check the system 64 or 22 bit:
getconf LONG_BIT
Check space usage:
df -h
Check processes:
ps ux or ps -ef or lsof -n -i
Kill a process:

Git workflow

This is my personal Git workflow, basically applicable with GitHub, GitLab and Bitbucket, but probably not Gerrit.

Let's assume there is a cool project on GitHub you will work with and collaborate with other contributors, which is called cool with the git URL like: [email protected]:CoolProject/cool.git.

	docker exec -it my_instance /bin/bash

	docker attach my_instance # Go into docker instance

	docker ps # Check runing instances

	docker ps -a # Check all instances

	docker start instance_name # Start a docker instance

	from nose import with_setup

	def setup_module(module):
	print ("") # this is to get a newline after the dots
	print ("Start testing module: " + str(module))

	def teardown_module(module):
	print ("") # this is to get a newline after the dots
	print ("Done testing module: " + str(module))

	#!/bin/bash

	if [ "$1" == "" ]
	then
	echo "Missing argument: path"
	exit 1
	else
	folder=${1}
	fi

	#!/bin/bash
	usage()
	{
	printf "\n"
	printf "Usage: $0 [-h] [-f]\n";
	printf " -h : Display this help.\n";
	printf " -f : INPUT FILE name.\n";
	printf " -i : Destination IP address.\n";
	printf " -m : Destination MAC address.\n";
	printf "\n"

	import calendar
	import datetime

	def get_fist_monday(year, month):
	month_range = calendar.monthrange(year, month)
	first_date = datetime.date(year, month, 1)
	delta = 7 - (month_range[0] - calendar.MONDAY )
	return first_date + datetime.timedelta(days = delta)

	def get_last_sunday(year, month):

	import socket
	import select

	UDP_IP = "127.0.0.1"
	IN_PORT = 5005
	timeout = 3


	sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
	sock.bind((UDP_IP, IN_PORT))

CJ *(^-^)* chuanjin

Git workflow

Preparation

CJ (^-^) chuanjin