An adult who happened to be born into the IT industry!

Nice to meet you. My
name is John and I joined Beyond Co., Ltd. as a new graduate in April.
I was born in Uzbekistan, came to Japan for the first time, and studied international management at a private Japanese university. I don't think anyone can imagine why I'm working in the IT industry. I don't know why, including myself. This
story may be a bit boring, but I'd be happy if you could take a little time to read it.

My encounter with Linux

I graduated from high school in Uzbekistan, far from Japan.
I enrolled in the international Ritsumeikan Asia Pacific University in Oita Prefecture to study business management in Japan, the country with the second fastest growing economy in the world.
During my university years, I only took business management classes in English, so I never thought I would work in the IT industry. Since

I thought that because IT is a GUI, I would be able to use a PC freely wherever I went

However, when I came to Beyond, I encountered Linux, an open source system similar to MacOS.
As a child, I loved computers, playing with them, so
I was confident that I could do anything on my own, as long as the computer didn't physically break.
But what I realized after coming to Beyond is that childhood thoughts are still childlike and small.
While studying Linux from a slightly different perspective and way of thinking than everyone else, I am also learning commands that are useful at work.
Linux can be used to communicate with servers, so it has become a good coworker for me.
Communication is important, whether it's with people or things!

Here are some commands that I found useful:

1．yum install

This command can be used to install various applications on a server.
Note that the installation command varies depending on the OS.
By the way, the yum install command can be used on RedHat-based OSes.

# yum install [app_name] yum install httpd

2．systemctl

Controls the system or acts as a service manager.
[option]>>start, stop, status, enable, disable, restart…

# systemctl [option] command [name] systemctl start httpd

3. mkdir

The mkdir command can be used to create a directory, or in more familiar terms, a folder.
The great thing about mkdir is that it can create many directories at the same time.
mkdir also has options.

# mkdir -p mkdir -p [/tmp/com/us]

will create a directory that did not exist

mkdir /tmp/com/us

will display an error because the directory /tmp/com does not yet exist
.

mkdir -p /tmp/com/us

No error occurs when you run this command.
The reason is that the parent directory /tmp/com/ is also created when the us directory is created.

4. Touch and Cat

touch /path/to/file

If touch is run on a file that does not exist with a command to update the timestamp, it will create an empty file to continue processing since there is no file to update the timestamp on.
Touch can create files without a container.

# cat [file name] cat tee.txt

tee.txt is a file on my server, so please enter the name of the file on your server!
You can use the cat command to view the contents of the file.

5. kill

The kill command is the command you need to be most careful with.
For example, it will instantly kill all active processes running on your computer.
In fact, the kill command is used to kill processes that are having a negative impact on the server.
Just hearing the word kill can be scary.

# kill [process name] kill httpd

lastly

It was really hard to come up with this blog.
I think that's because I'm still in the process of learning Japanese.
I can speak my native Uzbek and English, but I feel I have a lot more to learn before I can master Japanese, the third most difficult language in the world. I

will continue to study Japanese every day, while also improving my technical knowledge

This is the first blog I have written.
The information written in this blog may be limited and simple for some people, but these small things
are the first step in my growth.
Over time, I will continue to gain more knowledge and do my best to write blogs that contain even better information for readers.
Thank you for reading.