Alternate row color shading in Excel, also known as “zebra striping,” refers to the practice of formatting rows in a spreadsheet so that adjacent rows have different background colors. This visual distinction makes data easier to read and scan, especially in large spreadsheets with numerous rows of information. In this article, we will introduce 3 …

In PostgreSQL, the `search_path` is a configuration parameter that determines which schemas the system will check and in what order when an object (like a table or a function) is referenced by a simple, unqualified name. By default, the `search_path` is set to `$user, public`, which means the system will first look for objects in …

On a Linux system, TCP ports in a reserved range (typically less than 1024) can only be bound by processes with root privilege. If we’re trying to bind a port in a Linux environment less 1024, we will receive a “Permission denied” error. Listen tcp :80: bind: permission denied So we should do either: Reason …

It was late Thursday evening when I ran into a pesky network issue on our Linux server that had me stumped for hours. We had just wrapped up deploying a new application, and suddenly, users started reporting intermittent connectivity issues. Initial checks showed no problem with the server’s software configurations, so I decided to dive …

When it comes to Amazon Web Services (AWS), S3 is one of the most popular services. This is because S3 provides a secure and scalable storage solution for businesses of all sizes. In order to ensure that your S3 buckets are sized correctly, you need to understand how to calculate their size. In this blog …

A PFX file is a certificate in PKCS#12 format. It contains the SSL certificate (public keys) and the corresponding private keys. Most of the Certificate Authorities will not issue certificates with the private key. They just issue and share the certificates in .cer, .crt, and .p7b formats which don’t have the private key in most …

Recently, I encountered a strange problem when executing the binary file protoc, which resulted in the error “no such file or directory: ./protoc”. The file was clearly there, but the error persisted, making me wonder if there was a bug in the system. Whenever I face such bizarre issues, I tend to doubt the operating …

In Ansible, a list refers to an ordered collection of items, much like an array or a list in other programming languages. Lists are used to keep related elements grouped together for easier management and operation. You can define a list in Ansible as follows: fruits: – Apple – Banana – Orange In this example, …

In Ansible, you can check if an element is present in a list using the in keyword in a playbook or in a Jinja2 template. Here’s an example of how you can use the in keyword to check if an element is in a list in a playbook: In this example, the my_list variable is …

Red Hat has recently announced significant updates to its flagship operating system. It has several key enhancements, focusing on containerization, system management, and storage solutions. These improvements include: Containerized Future: Both versions natively incorporate Podman for managing Linux containers, with enhanced automation and web console improvements. This includes automated actions for failed container health checks, …