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.

CPU utilization Not Evenly distributed

A system is having a single core, and if there is a single process consuming all the CPU Time, then CPU utilization will show 100% utilization. But in the case of multi-core systems, it is not necessary that all the…

What Is Linux?

Linux is very popular now. But what is Linux? To understand what Linux is, it is necessary to first explain what OS is and a little about its component parts. We collect 4 basic questions to help you understand what…

20 Important Linux Commands for Linux Beginners

Linux commands are very important for Linux Beginners. These 20 important Linux Commands will be very useful for you. In this article, I will show you the 10 basic Linux commands and 10 advanced commands that every beginner must know.…

How Disk Multipath works on Linux

Linux Multipath command is used to manage storage SAN (storage area network) disks on OS side. Linux multipath provides a way of organizing the I/O paths logically, by creating a single multipath device on top of the underlying devices. Start…

15 Linux multipath examples for Linux admin

Linux Multipath command is used to manage storage SAN (storage area network) disks on OS side. Linux multipath provides a way of organizing the I/O paths logically, by creating a single multipath device on top of the underlying devices. Flush/Remove…

15 Linux multipath command examples

Linux Multipath command is used to manage storage SAN (storage area network) disks on OS side. Linux multipath provides a way of organizing the I/O paths logically, by creating a single multipath device on top of the underlying devices. Without…

Filtering CDP LLDP packets with Tcpdump

Tcpdump is a very powerful Linux command to capture packets. CDP and LLDP protocol can be used to get upstream switch info like vlan id, port info, switch name etc from Linux servers. We can use tcpdump command on Linux…