Blogs

This blog post describes how to deal with the following error when trying to install a package on an AWS EC2 instance (graviton). [Errno...

Where is a default password In order to find out where a default password is, you need to refer to a path /var/log, and open mysqld.log....

What is a CSR file? CSR stands for Certificate Signing Requesters and is a file containing personal or corporate information related to...

This document is for an older version of the kernel installed. Overview OS: Amazon Linux AMI release 2016.09 Old kernel: ...

This article explains the command AWK, which is used in conjunction with the log check. What is AWK Command? When processing multiple...

Hello everyone, I am Jon from Beyond GTA Inc. and today we will discuss one of the important features of the Linux operating system....

Today, using Apache on a Linux system is the standard setup and we as server engineers often need to read its access logs. This blog post...

This blog post briefly explains an overview of Linux. What is Linux? Linux is a type of operating system, a basic software used to...

Greetings to all! Jon here from Beyond GTA, and today I am going to share some basic knowledge about cron, which is a very common term...

Overview When you create an EC2 instance, you probably use an on-demand instance that is charged on a pay-as-you-go basis, but when...

If you are a server engineer or a regular Linux user, you are most likely familiar with the command "top", which shows the Linux...

Hello everyone! This is Jon from Beyond GTA Inc, and today I would like to introduce an interesting topic about Oracle Linux. Since most...

Q: Which command displays information about loaded kernel modules? (Select all) lsmod 〇 modprobe cat /proc/modules 〇 cat /proc/modprobe...

grep is a great command on Linux and you have numerous chances to use the command when you use Linux. However, grep has lots of options...

If you are using a root certification from LetsEncrypt, you might discover that an SSL certificate error occurring on access from an old...

You might have heard of the word "ELB", but do you clearly understand what it is and how it works? Today, I will briefly explain ELB, a...