How to Execute Linux Commands in Golang
If you want to execute linux commands in Golang, then you can use exec.Command:
How to Check for Prime Numbers using Golang
If you need to check for Prime Numbers in Golang, then you can use the following method:
How to Raise a Number to a Power in Golang
If you need to raise a number to a power in Golang, then you can use the math.Pow function:
How to get CPU Frequency in Linux
If you need to get the CPU Frequency in Linux, then you can run the following command:
How to Disable Warning with Python Pandas
How can python pandas disable warnings? If you need to disable warnings with Pandas on Python, then you can use the warnings module and ignore… Read More »How to Disable Warning with Python Pandas
How to Get all Caps Alphabet as List in Python
If we take the following list: How do we extract only the UpperCase letters of a given word? How to get only the Capital Letters… Read More »How to Get all Caps Alphabet as List in Python
[Solved] Error creating RDS DB Instance: IAM role ARN value is not value or does not include the required permissions for: ENHANCED_MONITORING
When you are trying to create an RDS database and you get the dreaded error message: IAM role ARN value is invalid or does not… Read More »[Solved] Error creating RDS DB Instance: IAM role ARN value is not value or does not include the required permissions for: ENHANCED_MONITORING
How to create an AWS Lambda in Terraform
Step 1 – Lambda Code in Python The following code expects a python file with the contents as follows in a file called python/script1.py: Step… Read More »How to create an AWS Lambda in Terraform
[Solved] Instance Profile already exists in Terraform
If you get the Instance Profile already exists error when running your Terraform apply, then it is either because an instance profile with that name… Read More »[Solved] Instance Profile already exists in Terraform
[Solved] An error occurred (UnauthorizedException) when calling ListAccounts operation: Session token not found or invalid
If you are using aws configure sso to populate your ~/.aws/credentials file and you get the following error when you try and reauthorize, then you… Read More »[Solved] An error occurred (UnauthorizedException) when calling ListAccounts operation: Session token not found or invalid
How to Match Multiple Strings with grep
If you need to match a string in a file, then grep is your friend. An example of using grep Let’s take a file called… Read More »How to Match Multiple Strings with grep
How to Invoke an AWS Lambda from the CLI
If you want to invoke an AWS Lambda from your CLI, then the best option is to have the AWS CLI installed. Getting started with… Read More »How to Invoke an AWS Lambda from the CLI
How to Exit if a Bash Variable in Not Set
Sometimes you might want to exit a command if a variable is not set in Bash. You can do this as follows:
How to Force Gitlab pipeline to fail on condition
if you have a conditional in your Gitlab pipeline stage that checks if something has succeeded or failed, then you can use this to pass… Read More »How to Force Gitlab pipeline to fail on condition
How to run AWS CLI commands based on AWS CLI Version in Bash
If you find yourself having the requirements to support both AWS CLI v1 and v2 simultaneously, then you can use the following conditional in Bash… Read More »How to run AWS CLI commands based on AWS CLI Version in Bash
[Solved] Unknown options: –cli-binary-format AWS CLI
If you have tried calling the AWS CLI and got the following error: Then it is because you are using the AWS CLI v1 and… Read More »[Solved] Unknown options: –cli-binary-format AWS CLI
How to Generate Random Strings with Dash in-between in Python
If you need to generate a random string that looks something like this: VUNBXJ-230411, then you can use the following random generator: You simply call… Read More »How to Generate Random Strings with Dash in-between in Python
How to Check OS version and flavor in Linux
If you need to check the version and flavour of the running Linux instance, then you can try the below commands:
How to use a Backend-Config File for Terraform S3 State Configuration
If you are using S3 as the backend for your state management in Terraform, then you can create environment specific configuration files where you store… Read More »How to use a Backend-Config File for Terraform S3 State Configuration
How to Refresh State in Terraform
Sometimes your infrastructure may be out of sync with your Terraform state because resources may have been amended or deleted manually. For this you can… Read More »How to Refresh State in Terraform
How to get the Length of an Array in C
There isn’t really a standard way to get the length of array in C. This means you need to do some additional work to achieve… Read More »How to get the Length of an Array in C
How to write If/Else Statements in Terraform
If/Else statements are conditional statements that perform decisions based on some known state, or variable. Terraform allows you to perform these if/else statements using a… Read More »How to write If/Else Statements in Terraform
How to Reset Udemy Progress
If you need to redo a Udemy course and you would like to reset the course’s progress, then you can use the following Javascript snippet… Read More »How to Reset Udemy Progress
How to Get Last Digit of a Large Number in C
The challenge Define a function that takes in two non-negative integers aaa and bbb and returns the last decimal digit of aba^bab. Note that aaa and bbb may be very large! For example, the… Read More »How to Get Last Digit of a Large Number in C
[Solved] Network interface is in use by another service in AWS
If you have tried to delete a Security Group, or VPC, or various other resources and you get the dreaded Network interface is in use… Read More »[Solved] Network interface is in use by another service in AWS