Linux & Windows Server System Administrator

17/04/2024

How the Linux operating system works

The Linux OS follows a modular design that is the key to its many variations and distributions. All Linux distributions are based on the Linux kernel, but they can differ depending on factors such as:

*Kernel version. Distributions can be configured with more recent versions to incorporate newer features or with older versions to be more stable.
*Kernel modules. This is software that can be loaded and unloaded into the kernel to extend functionality without rebooting. Kernel modules are often used to support:
device drivers, which use code that controls how attached devices operate;
file system drivers, which use code that controls how the kernel works with different file systems; and
system calls, which use code that controls how programs request services from the kernel.

*Configuration options. Linux kernels compiled with configuration options set to include only device or file system drivers are used for some specialized distributions; for example, compiling a kernel for a wireless device without any wired network device drivers.

The Linux kernel is the one thing that all systems running Linux have in common. Linux works by:

* Loading and booting a Linux kernel.
Once booted, the kernel manages all system input and output. The system is initialized, and processes can be started.
*As system processes are started, the system can be used for processes that include network server functions, commands entered interactively via command line, desktop applications or any application or program.

While the kernel may be almost identical -- with some divergence for configuration and compilation differences -- the user experience can vary widely, depending on how the Linux system is being used. For example, some Linux use cases with widely different user experiences include:

*Desktop productivity systems, such as those used by software developers or other professionals. Software development workstations may be optimized for performance, while desktops for administrative professionals may be optimized for use of desktop productivity tools.
*Network servers may not even include a terminal for direct access. These headless servers are managed remotely through network terminal or Windows sessions. Servers may be used by many but should be directly accessed only by authorized system admins.
*Thin clients enable users to access a rich desktop environment from a lightweight device. This includes Raspberry Pi single-card computers and Google Chromebooks.

When using Linux with a desktop environment as a GUI, Linux works much the same as any GUI-based OS. Applications and other resources can be opened by clicking on icons, and files can be moved, copied or deleted using a mouse or trackback.

13/04/2024

How do you start learning Linux for your career? It’s possible to learn by yourself by taking a few classes online and installing Linux to test your knowledge. Follow these steps to get started.

Structure and architecture of Linux
You should be familiar with the basic components of Linux, how it works, and how the different pieces work together. Here are some topics to explore:

* Linux distribution
*The functions of the kernel, server, environment, and boot loader
*How Linux compares to other operating systems like Windows and macOS

* cd(change directory)

* ls (list files)

* rm (delete files

* pwd (get current directory)

* mkdir (create directory)

* touch (create file)

* nano (update file)

Linux commands
You’ll want to learn how to redirect inputs and outputs to different files and parts of the operating system. Here are a few you should know:

*stdin, stdout, stderr (standard input, output, and error)
* > and >> (output redirection)
* sort (sorting lines of text files)
*uniq (filters out repeated lines in a file)
*grep (searches for patterns in a file)
*sed (inserts, deletes, searches, and replaces)

09/12/2020

🙂🙂

As hoofcare providers, we have a tough job. I don't know of many other professions where you can literally die, even if you're as safe as you can possibly be, from one wrong move. Even the kindest, calmest horses can have a moment- a fly lands on their stomach, for example, and suddenly a hoof is all too close to our head.

I am in a lot of farrier Facebook groups, and I don't think a day goes by without a post asking for advice about rehabbing an injury incurred from a horse on the job. It's sobering, to say the least.

I'm sure there isn't one horse owner that would say they don't care about the safety of the equine professionals in their life. That being said, I think many owners aren't sure how to best support their horse and help appointments go smoothly. How can we help horses to feel comfortable and stand well to get their feet done?

When picking out a horse's hoof, you need the foot up for less than 10 seconds. When trimming a foot, you often need the foot up for multiple minutes to do everything you need to do to get the foot balanced and trimmed well. Many horses aren't used to that, and as prey animals can become quite anxious that they don't have the ability to leave whenever they want.

A horse that is having trouble standing for appointments is exhausting for us. They can tweak our muscles and our back and even mentally exhaust us as we try to complete a job that can be difficult even when a horse DOES stand well, imagine how exponentially more difficult it is when they are fighting us the entire time!

With all this in mind, I talked to some hoofcare providers on how to best prepare horses for their appointments- to ensure we are safe, the horse is safe, the owner is safe, and to also make our daily appointment more enjoyable. No one wants to go to a job where they dread they may get hurt!

I spoke with Kristin Thornberry, a hoofcare provider and trainer in Arkansas, on some practical ways to help horses become "farrier friendly."

You can find the interview on your favorite podcast app under "The Humble Hoof," or at this link:
https://thehumblehoof.libsyn.com/farrier-friendly-how-to-support-your-horse-to-stand-well-for-the-farrier-with-kristin-thornberry

What are some ways YOU help your horses to stand well for their appointments?

09/12/2020

😇😇😇

An amazing journey through ageless art and history.

The Vatican Museums hold some of the most precious and world-wide famous Roman sculptures, as well as some of the greatest masterpieces from the Renaissance.

Amassed through the centuries by the Catholic Church, the Vatican Museums' collection is immense and constantly worked on to preserve it in the best possible condition.

Visiting the Museums you'll also be able to acces the Pinacoteca Vaticana, an internal Art Gallery that holds paintings from the likes of Leonardo da Vinci, Raphael, Caravaggio and Giotto.

Tou will also journey through the Sistine Chapel, the place where new popes are eleceted; its ceiling and walls entirely decorated by Michelangelo's frescos "Sistine Chapel ceiling" and "The Last Judgment".

If you are in Rome and wish to visit the vatican Museums, My Personal Driver's professional chauffeurs will take you there in full comfort, safety and be right there to bring you back to your hotel once the visit is done.

Dowload our App to book a ride and access all our services:
- Android version on the Google PlayStore: https://bit.ly/2SUK0Be
- iOS version on the Apple Store: https://apple.co/34Y8eQQ
To know more visit our website at:
https://mypersonaldriverapp.it

09/12/2020

Variations in Service Names
If you work within the same Linux environment, you will learn the names of the services you commonly use.
For example, if you are building a website, you will most likely use systemctl restart apache2 frequently, as you refresh configuration changes to your server.
However, when you move between different Linux variants, it is helpful to know that the same service may have different names in different distributions.
For example, in Ubuntu and other Debian based distributions, the Apache service is named apache2. In CentOS 7 and other RedHat distros, the Apache service is called httpd or httpd.service.

08/12/2020

We setup and maintain Linux servers. The supported variants are RedHat, CentOS, Ubuntu, Debian and Fedora. Our experts with strong knowledge of Linux internal, help you to get smooth functioning of all your servers. You focus on your business while we take care of your Linux infrastructure