Cosmin Constantin concosminx

Download and Installation

# install the generator 

npm install -g yo generator-easy-ui5

# verify your installation

yo

Instead of using git pull use

git pull --rebase

and in case of conflicts use

git rebase --abort

add original repo, fetch all branches, rewrite your master with upstream master

git remote add upstream https://github.com/original-repo/goes-here.git
git fetch upstream
git rebase upstream/master

add force if you need it

git push origin master --force

Nginx Basic Auth

A simple demo of using Nginx as a reverse proxy to add basic authentication.

%ANDROID_SDK_ROOT%\tools\emulator -avd Pixel_2_API_29 -verbose -show-kernel

Create X.509 certificates

(Steps taken from: https://www.baeldung.com/x-509-authentication-in-spring-security)

All passwords: changeit

RootCA

openssl req -x509 -sha256 -days 3650 -newkey rsa:4096 -keyout rootCA.key -out rootCA.crt

Install Java (Open JDK | Oracle) on Rocky Linux

Install Open JDK using yum

sudo yum install java-17-openjdk java-17-openjdk-devel

Install Oracle JDK

install wget | curl sudo dnf -y install wget curl

Becoming a Spring Certified Professional without the Core Spring Course

Until recently, the only way you could become a Certified Spring Professional was to take Pivotal’s compulsory, 4-day, Core Spring training course. On completion of the course, participants received an exam voucher that allowed them to schedule an exam at a certification centre.

At approximately £2.5k per attendee, the course is not cheap putting certification out of the reach of many self-funded developers and those that work for organisations without generous training budgets.

In May 2017 Pivotal changed their policy. Spring Certification Exams became available for individual purchase without enrolling in the course. I set out to see if it was possible to pass the exam without the Core Spring course and only using publically available material.

I set myself a budget of £250, ap

	// vim: syntax=sql

	CREATE OR REPLACE FUNCTION create_constraint_if_not_exists (t_name text, c_name text, constraint_sql text)
	RETURNS void
	AS
	$BODY$
	BEGIN
	-- Look for our constraint
	IF NOT EXISTS (SELECT constraint_name
	FROM information_schema.constraint_column_usage

	ROOT CA
	--------------
	Generate the CA private key:
	$ openssl genrsa -out ca.key 2048

	Create and self sign the root certificate:
	$ openssl req -new -x509 -key ca.key -out ca.crt

	Import root CA certificate into truststore:
	$ keytool -import -file ca.crt -keystore ca.truststore -keypass <password> -storepass <password>