Blog Posts

How to set ZSH as your default Shell

November 26, 2021

You may have installed ZSH and every-time you open your terminal, it opens BASH by default.


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How to Base64 Encode/Decode in the Terminal/CLI

November 25, 2021

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!


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How to Enable Syntax Highlighting in Vim

November 24, 2021

There are a few different ways to enable Syntax Highlighting in Vim.


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How to Create an AWS Security Group in Terraform - Securing AWS Resources with Terraform Security Groups

November 23, 2021

Security groups are a critical component for securing resources in AWS.


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How to Create an AWS Security Group in CloudFormation

November 22, 2021

Below is a simple CloudFormation script block to create a Security Group in AWS.


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How to provide Default Values for AWS CloudFormation Parameters

November 21, 2021

AWS CloudFormation is very useful for creating template-able infrastructure definitions.


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How to Validate an AWS CloudFormation Template

November 20, 2021

The AWS CLI comes with a useful subcommand to validate a CloudFormation template.


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How to Reverse Sort Integers in Go

November 19, 2021

The challenge The two oldest ages function/method needs to be completed.


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How to view the Encoded Authorization Failure Message in AWS

November 18, 2021

You may come across a message that reads similar to the following:


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How to run/execute a program from Terraform

November 17, 2021

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:


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How to script AWS AppStream 2.0 ImageBuilder

November 16, 2021

AppStream (2.0) is a fully managed non-persistent desktop and application service for remotely accessing your work.


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How to Reimplement the Unix Uniq Command in Golang

November 15, 2021

The challenge Implement a function which behaves like the uniq command in UNIX.


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How to install GraalVM on Mac

November 14, 2021

Install GraalVM with Homebrew Homebrew is the preferred way to install anything on your Mac.


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How to Generate Random Integers with a Range in Java

November 13, 2021

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 value for.


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How to create ArrayList from Array in Java

November 12, 2021

The problem If you have a traditional array, that looks something like the following:


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How to Generate a Random AlphNumeric String in Linux/MacOS

November 11, 2021

If you need to generate a random AlphaNumeric string from the Linux/MacOS Command-Line, then you can use the following script:


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How to check if a string is empty in Go

November 10, 2021

If you need to check if a string is empty in Go, then there are two possible ways to immediately verify this:


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How to read a file line by line in Go

November 9, 2021

If you need to read a file line by line in Go, then you can use the bufio package as follows:


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Floating-point Approximation in Golang

November 8, 2021

The challenge Consider the function f: x -> sqrt(1 + x) - 1 at x = 1e-15.


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All the Ways to Divide an Array in Two in Golang

November 7, 2021

The challenge Write a function partlist that gives all the ways to divide an array of at least two elements into two non-empty parts.


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