David Cao

David Cao

David is a Cloud & DevOps Enthusiast. He has years of experience as a Linux engineer. He had working experience in AMD, EMC. He likes Linux, Python, bash, and more. He is a technical blogger and a Software Engineer. He enjoys sharing his learning and contributing to open-source.

2 ways to change file permissions in Linux

This article is part of the following series.   In Linux, file permissions play a crucial role in determining who can access, modify, or execute files and directories. The permissions are typically represented by a combination of read (r), write…

Resize Multipath disk on Linux

A multipath disk, also known as a “multipath device,” is a logical representation of a storage device in a storage area network (SAN) environment that utilizes multiple physical paths. In a multipath configuration, a storage device, such as a disk…

Terraform AWS EC2 user data troubleshooting

In AWS EC2 (Elastic Compute Cloud), user data refers to the information or scripts that you can provide to an EC2 instance during its launch. User data can be used to automate instance configuration and perform various tasks on the…

RHCSA Practice Exam

RHCSA Practice Exam A Here are some tips to ensure your exam starts with a clean environment:   After applying these tips, you’re ready to get started. Good luck!   Answers: Reset the root password on boot If you are…

5 formas de verificar la dirección IP en Linux

Cómo verificar la dirección IP en Linux En el entorno de Linux, es esencial poder verificar la dirección IP de su sistema. La dirección IP es un identificador único asignado a cada dispositivo conectado a una red, lo que le…