You Can Modify the Message When You do SSH Login
Did you know that you can change the message you see when you do ssh connect? /etc/motd The contents of the /etc/motd file are output by...
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Blogs
![[Linux] What do “~”, “$” and “#” Mean at the End of the Command Line?](https://static.wixstatic.com/media/9cfabe_2288ed2c444f4bcbbb8504f60e2f33b8~mv2.png/v1/fill/w_800,h_601,fp_0.50_0.50,q_95,enc_auto/9cfabe_2288ed2c444f4bcbbb8504f60e2f33b8~mv2.png)
Aug 25, 2023
[Linux] What do “~”, “$” and “#” Mean at the End of the Command Line?
Related terms and commands What do the symbols on the Linux command line mean？ I’m going to explain each of the symbols' meanings....
Aug 17, 2023
Demystifying '...' in ES2015: Exploring the Newly Added Spread Syntax
Hello! I’m going to talk about the spread syntax that can be used to expand arrays, etc. that are added to ES2015. What’s spread syntax？...
Aug 10, 2023
I Asked ChatGPT to Make an Epic Python Turtle Race
I decided to play around with ChatGPT. So, I asked ChatGPT to make the Python turtle race I made last time more exciting. The environment...
Aug 3, 2023
Developed a Turtle Race with Python Library
I’m going to make turtles compete with each other by using the Python library turtle. You can do a lot of things with turtles like the...
Jul 18, 2023
What is a Public Function? (Access Modifier)
Introduction First of all, the “public” of the public function is called an access modifier, access modifiers allow properties (variables...
Jun 28, 2023
How to Deploy a Lambda Function to Delete EC2 Instance Periodically
When you have many EC2 instances, you may forget to stop instances that you are not using. If you keep running the instances that aren't...
![[The Object Storages] What’s the Difference Between Amazon S3 and Wasabi](https://static.wixstatic.com/media/9cfabe_8b60a8da6aea4b1cb58858183fea7da5~mv2.png/v1/fill/w_767,h_576,fp_0.50_0.50,q_95,enc_auto/9cfabe_8b60a8da6aea4b1cb58858183fea7da5~mv2.png)
Jun 1, 2023
[The Object Storages] What’s the Difference Between Amazon S3 and Wasabi
In this article, I’m going to introduce you to the differences between Wasabi (Hot cloud storage) and Amazon S3 (AWS’s object storage)....
May 21, 2023
Wireshark From Scratch
What is Wireshark？ It is one of the most famous necessary tools for network engineers. It supports Windows and macOS, and basically...
May 9, 2023
How to Manage Terraform Version Using tfenv
What is tfenv? The tfenv is a tool that’s for managing Terraform versions with CLI. You may have noticed the similarity in the name. The...
May 4, 2023
“ll” is not a command
Many of you may use “ll” instead of the “ls” command. In this article, I’m going to explain what “ll” is and what you should know about...
Apr 27, 2023
Improving Ways to Use Linux Commands
I’m going to introduce Linux commands and options that are smartly used. For example, $ ps auxwwf | grep httpd | grep -v "grep” This one...
Apr 20, 2023
What is PHP Constructor?
What are constructors? A constructor is a method that is always executed when a class is instantiated (made into an object). An usual...
Apr 12, 2023
How to rotate the MySQL slow.log file in log rotation
Have you experienced the MySQL slow.log file that has been accumulating for some time? Don’t you worry, you can use log rotation in this...
Mar 22, 2023
How to Install Old Version of MySQL
When you want to install an old version of MySQL, but there’s no repository on the official site, you can do these steps to install it....
Mar 7, 2023
About mysqlpump and Its Advantages
You might already know about “mysqlpump”, but I used this tool as an experiment and I made some suggestions for people who haven’t used...
Feb 15, 2023
How to Display Command History in Linux OS
The “history” command is being used for displaying a list of commands that have been run. The history command Display a list of commands...
Feb 8, 2023
Let’s Get to Know About AWS Ground Station
Have you guys heard about “AWS Ground Station''? It is explained like this on their official website. AWS Ground Station is a fully...
Jan 23, 2023
How to Create a VPC Environment Using CloudFormation (Vol.2)
This article is a continuation from our last blog post. Let's create a VPC from the template file we created last time. Create a stack...
Jan 18, 2023
How to Create a VPC Environment Using CloudFormation (Template File)
In this article, I’m going to talk about how to write a template file that’s necessary to execute CloudFormation. What is CloudFormation？...
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