How to add Account Condition to AWS Lambda Permissions in Terraform
If you need to lock an AWS Lambda function down to a source account for security reasons (PCI.Lambda.1) then you can do so by using the source_account …
Technical Articles
In-depth guides, insights, and best practices for modern software engineering
How to AssumeRole in Terraform LocalExec Provisioner Block
I needed to execute a Terraform null_resource provisioner (local-exec) block to run an awscli command, but assume a role passed down to it.
There was …
Read Article →Split and then add both sides of an array together in Java
The challenge
You will receive an array as a parameter that contains 1 or more integers and a number n.
Here is a little visualization of the process: …
Read Article →Highest Rank Number in an Array in Golang
The challenge
Complete the method which returns the number which is most frequent in the given input array. If there is a tie for the most frequent …
Read Article →Sort Words by Position Index in Java
The challenge
Your task is to sort a given string. Each word in the string will contain a single number. This number is the position the word should …
Read Article →How to get the Current Machine Name and Logged In User in Java
It’s very easy to get the current machine name and logged in user using Java.
Get the Currently Logged in User
String username = …How to set ZSH as your default Shell
You may have installed ZSH and every-time you open your terminal, it opens BASH by default.
How do you set your default shell to open as ZSH? …
Read Article →How to Base64 Encode/Decode in the Terminal/CLI
If you need to either Encode or Decode a Base64 value, there are many ways to achieve this, one of them is directly from your commandline itself!
How …
Read Article →How to Enable Syntax Highlighting in Vim
There are a few different ways to enable Syntax Highlighting in Vim.
Option 1 – Edit ~/.vimrc
Add syntax on to your local ~/.vimrc
echo "syntax …How to Create an AWS Security Group in Terraform - Securing AWS Resources with Terraform Security Groups
Security groups are a critical component for securing resources in AWS. This guide will show you how to create and manage security groups in AWS using …
Read Article →How to Create an AWS Security Group in CloudFormation
Below is a simple CloudFormation script block to create a Security Group in AWS.
Resources:
SampleAppAppstreamSG:
Type: AWS::EC2::SecurityGroup …How to provide Default Values for AWS CloudFormation Parameters
AWS CloudFormation is very useful for creating template-able infrastructure definitions.
One of the sections of a template, is the Input Parameters, …