If you have recently upgraded your MacOS operating system, you may get the following error in your terminal when installing some Homebrew packages: Error: Permission… Read More »[Solved] Permission denied @ apply2files – /usr/local/lib/node_modules/expo-cli/node_modules/extglob/lib
If you have ever received the following error is not authorized to create managed-rule when running a Step Function through Terraform’s AWS Provider, then you… Read More »How to Fix “is not authorized to create managed-rule” in AWS Step Functions
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… Read More »How to add Account Condition to AWS Lambda Permissions in Terraform
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 More »How to AssumeRole in Terraform LocalExec Provisioner Block
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… Read More »Split and then add both sides of an array together in Java
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… Read More »Highest Rank Number in an Array in Golang
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… Read More »Sort Words by Position Index in Java
It’s very easy to get the current machine name and logged in user using Java. Get the Currently Logged in User This is also platform-independent.… Read More »How to get the Current Machine Name and Logged In User in Java
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… Read More »How to set ZSH as your default Shell
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… Read More »How to Base64 Encode/Decode in the Terminal/CLI
There are a few different ways to enable Syntax Highlighting in Vim. Option 1 – Edit ~/.vimrc Add syntax on to your local ~/.vimrc Option… Read More »How to Enable Syntax Highlighting in Vim
Below is a simple Terraform script block to create a Security Group in AWS. You can read up more about all the possible arguments in… Read More »How to Create an AWS Security Group in Terraform
Below is a simple CloudFormation script block to create a Security Group in AWS. You can read up more about all the possible arguments in… Read More »How to Create an AWS Security Group in CloudFormation
AWS CloudFormation is very useful for creating template-able infrastructure definitions. One of the sections of a template, is the Input Parameters, or simply Parameters as… Read More »How to provide Default Values for AWS CloudFormation Parameters
The AWS CLI comes with a useful subcommand to validate a CloudFormation template. Simply run the following to validate a CloudFormation template file: Remember to… Read More »How to Validate an AWS CloudFormation Template
The challenge The two oldest ages function/method needs to be completed. It should take an array of numbers as its argument and return the two highest… Read More »How to Reverse Sort Integers in Go
You may come across a message that reads similar to the following: Encoded authorization failure message A full message, will look something like: How to… Read More »How to view the Encoded Authorization Failure Message in AWS
If you need to run a local application from your Terraform scripts, you can call out to the provisioner local-exec and issue the command syntax:
AppStream (2.0) is a fully managed non-persistent desktop and application service for remotely accessing your work. The ImageBuilder forms the first stage in the creation… Read More »How to script AWS AppStream 2.0 ImageBuilder
The challenge Implement a function which behaves like the uniq command in UNIX. It takes as input a sequence and returns a sequence in which… Read More »How to Reimplement the Unix Uniq Command in Golang
Install GraalVM with Homebrew Homebrew is the preferred way to install anything on your Mac. Install GraalVM without Homebrew Follow these 5 steps to get… Read More »How to install GraalVM on Mac
Java comes with many different ways to generate random integers, even if you need to specify a lower and upper bound to constrain your required… Read More »How to Generate Random Integers with a Range in Java
The problem If you have a traditional array, that looks something like the following: And you would like to convert this to an ArrayList: ..then… Read More »How to create ArrayList from Array in Java
If you need to generate a random AlphaNumeric string from the Linux/MacOS Command-Line, then you can use the following script: This can also be piped… Read More »How to Generate a Random AlphNumeric String in Linux/MacOS
If you need to check if a string is empty in Go, then there are two possible ways to immediately verify this: Option 1 –… Read More »How to check if a string is empty in Go