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.

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…

50 RHCSA exam questions and answers

The RHCSA (Red Hat Certified System Administrator) exam is a performance-based certification exam offered by Red Hat. It is designed to validate the skills and knowledge required to effectively administer Red Hat Enterprise Linux systems in various enterprise environments. The…

Search files by size in Linux

There are a few different ways to search files by size in Linux. One way is to use the find command. The find command is a powerful tool that can be used to search for files based on a variety…