Ubuntu is a very popular Linux distribution. Many Linux beginners want to learn it but don’t know how to start. Today we will look at how to install Ubuntu system in 2 minutes. After we install it, we can use it to practice our Linux commands. We think it is a good way to start …
David Cao
Networking management is a common task for Linux admins. Today we will cover some basic networking commands for the Ubuntu Linux interview. These commands are frequently asked during an interview. Hope this post can help you improve your interview performance. 10 Networking Commands For Ubuntu Linux Interview lspci – lists all pci devices. Combine it …
CPU usage is an important metric for CPU performance in Linux. Today we will learn how to use top and sar command to check cpu usage and what us sy ni wa hi st means. Understanding CPU usage in Linux CPU usage is a statistic of CPU usage per unit time, displayed as a percentage. …
This is a detailed example to learn the difference between hard links and soft links in Linux. Create two files: $ touch foo; touch bar Enter some Data into them: $ echo “Cat” > foo $ echo “Dog” > bar And as expected: $cat foo; cat bar Cat Dog Let’s create hard and soft links: …
Hard links and symbolic links are very confusing for Linux beginners. Today we will look at the differences between these two links. Hard Links In Linux By default, every file has a single hard link that gives the file its name. When we create a hard link, we create an additional directory entry for a …
When I first began managing Linux servers, one of the most perplexing metrics I encountered was the load average. At first glance, the numbers seemed abstract and elusive—what did a load average of 2.5 or 5.0 actually mean for system performance? I vividly remember the first time I was faced with a server running unusually …
In this tutorial, we will learn how to install GUI ( graphical user interface ) on Ubuntu server 20.04. We will install ubuntu-desktop in the following example. Four steps to install GUI on Ubuntu Server: update the apt package index and install tasksel choose which GUI we will use use tasksel command to install the …
TCP connection status is a key metric to troubleshooting TCP related network issues. We collect four basic connection status to help you understand what these metrics mean. From these metrics, we can tell that the issue happens from server-side or client-side. understanding TCP active connections openings active connections openings – This indicates the system has …
On Linux a login shell is a shell given to a user upon login into their user account. Today we will look at how to change the default login shell safely for one specific user. Understanding user shell in Linux A user’s shell is the program that runs when they login to a Linux system. …
How to check disk space is a commonly asked question during a Linux job interview. Disk space usage and disk utilization are different in Linux. Disk space usage means how much percent of space we use on the disk. Disk utilization means how busy the disk is when there is some workload on it. Today …