What is an operating system?

An operating system (OS) is the Application Which, after being initially loaded into the computer by a boot program, oversees all the other application programs in a computer. The application programs make use of the working system by making Furthermore, users can interact directly with the operating system Via a user interface like a command line or a graphical user interface (GUI).

9 Popular Mobile Operating Systems

Android OS (Google Inc.) ...
2. Bada (Samsung Electronics) ...
BlackBerry OS (Research In Motion) ...
iPhone OS / iOS (Apple) ...
MeeGo OS (Nokia and Intel) ...
Palm OS (Garnet OS) ...
Symbian OS (Nokia) ...
webOS (Palm/HP) ...

Types of operating systems.

Operating systems normally include pre-loaded on almost any Computer you purchase. Many men and women use the operating system which comes with their computer, however it is possible to update or perhaps alter operating systems. The three most frequent operating systems for personal computers are Microsoft Windows, macOS, and Linux. A GUI enables you to use your mouse to click on icons, switches , and menus, and that which is clearly displayed on the display by means of a combo of images and text. Each operating system's GUI includes a different feel and look, so if you Switch to another operating system it might appear unfamiliar at first. However, modern operating systems have been made to be effortless to utilize , and the majority of the fundamental principles are exactly the same.

Microsoft established the Windows operating platform at the mid-1980s. There have been a number of distinct variants of Windows, but the latest ones are Windows 10 (published in 2015), Windows 8 (2012), Windows 7 (2009), along with Windows Vista (2007). Windows includes pre-loaded on many new PCs, which helps to ensure it is the hottest operating system on the planet.
Microsoft Windows
Microsoft established the Windows operating platform at the mid-1980s. There have been a number of distinct variants of Windows, but the latest ones are Windows 10 (published in 2015), Windows 8 (2012), Windows 7 (2009), along with Windows Vista (2007). Windows includes pre-loaded on many new PCs, which helps to ensure it is the hottest operating system on the planet.
MacOS (formerly called OS X) is a Lineup of operating systems made by Apple. It comes preloaded on all Macintosh computers, or Macs. A number of the specific models include Mojave (published in 2018), High Sierra (2017), and Sierra (2016). Based on StatCounter Global Stats, macOS users accounts for significantly less than 10 percent of international functioning systems--considerably lower than the percent of Windows users (greater than 80 percent ). 1 reason behind this is that Apple computers have a tendency to be costlier. But a lot of individuals do prefer the appearance and feel of macOS over Windows.
macOS
MacOS (formerly called OS X) is a Lineup of operating systems made by Apple. It comes preloaded on all Macintosh computers, or Macs. A number of the specific models include Mojave (published in 2018), High Sierra (2017), and Sierra (2016). Based on StatCounter Global Stats, macOS users accounts for significantly less than 10 percent of international functioning systems--considerably lower than the percent of Windows users (greater than 80 percent ). 1 reason behind this is that Apple computers have a tendency to be costlier. But a lot of individuals do prefer the appearance and feel of macOS over Windows.
Linux (pronounced LINN-ux) is a household of open-source operating systems, so they may be altered and distributed by all around the globe. This differs from proprietary program such as Windows, which may only be altered by the organization that owns it. The benefits of Linux are that it's free, and there are several different distributions or variations you may select from. Based on StatCounter Global Stats, Linux users accounts for under 2 percent of international functioning systems. But most servers run Linux since it's relatively simple to personalize.
Linux
Linux (pronounced LINN-ux) is a household of open-source operating systems, so they may be altered and distributed by all around the globe. This differs from proprietary program such as Windows, which may only be altered by the organization that owns it. The benefits of Linux are that it's free, and there are several different distributions or variations you may select from. Based on StatCounter Global Stats, Linux users accounts for under 2 percent of international functioning systems. But most servers run Linux since it's relatively simple to personalize.
The operating systems we have been speaking about so much were created to operate on desktop and notebook computers. Mobile apparatus like telephones , tablets , and MP3 players Are distinct from desktop and notebook computers, so that they run operating systems that have been designed especially for mobile devices. From the screenshot below, you can view iOS running in an iPad. Operating systems for mobile devices normally are not as fully featured As those created for desktop and notebook computers, and they are not capable to Run each the exact same software. But, you can still perform a Great Deal of things Together, like watch videos, browse the net, manage your calendarand play games.
Operating systems for mobile devices
The operating systems we have been speaking about so much were created to operate on desktop and notebook computers. Mobile apparatus like telephones , tablets , and MP3 players Are distinct from desktop and notebook computers, so that they run operating systems that have been designed especially for mobile devices. From the screenshot below, you can view iOS running in an iPad. Operating systems for mobile devices normally are not as fully featured As those created for desktop and notebook computers, and they are not capable to Run each the exact same software. But, you can still perform a Great Deal of things Together, like watch videos, browse the net, manage your calendarand play games.

David Tomaschik: Book Review: Operator Handbook

When Netmux first released the Operator Handbook, I had to check it out. I had some initial impressions, but wanted to take some time to refine my thoughts on it before putting together a full review of the book. The book review will be a bit short, but that’s because this is a rather straightforward book.

Operator Handbook

I think the first things to know is that this book is strictly a reference. There’s nothing to read and learn things from in a cohesive way. It would be like reading a dictionary or a theasaurus – while you might learn things reading it, it’s not going to be in any meaningful way. There’s lots of things you can learn on a particular very narrow topic, but it is mostly organized to be “in the moment”, not as a “learning in advance” kind of thing.

The second thing to know is that unless you’re regularly in environments that don’t allow you to bring electronics in (e.g, heavily restricted customer sites), you really want this book in electronic format for quick searching and copy/paste. In fact, the tagline on the cover is “SEARCH.COPY.PASTE.L33T:)”. This is obviously a lot easier from the digital version. (Though I have to admit, I love the cover of the physical book...


When Netmux first released the Operator Handbook, I had to check it out. I had some initial impressions, but wanted to take some time to refine my thoughts on it before putting together a full review of the book. The book review will be a bit short, but that’s because this is a rather straightforward book.

Operator Handbook

I think the first things to know is that this book is strictly a reference. There’s nothing to read and learn things from in a cohesive way. It would be like reading a dictionary or a theasaurus – while you might learn things reading it, it’s not going to be in any meaningful way. There’s lots of things you can learn on a particular very narrow topic, but it is mostly organized to be “in the moment”, not as a “learning in advance” kind of thing.

The second thing to know is that unless you’re regularly in environments that don’t allow you to bring electronics in (e.g, heavily restricted customer sites), you really want this book in electronic format for quick searching and copy/paste. In fact, the tagline on the cover is “SEARCH.COPY.PASTE.L33T:)”. This is obviously a lot easier from the digital version. (Though I have to admit, I love the cover of the physical book – it’s got a robust feel and a cool “find it quick” yellow color.)

I rather suspect this book is inspired by books like the Red Team Field Manual, the Blue Team Field Manual, and Netmux’s own Hash Crack: Password Cracking Manual. When you crack it open, you’ll immediately see the similarities – very task focused, intended to get something done quickly, rather than a focus on the underlying theory or background.

I’ve actually referred to the book a couple of times while doing operations. Some of the things in it would be easily obtained elsewhere (e.g., a quick Google search for “nmap cheatsheet” gets you much the same information), but many other things would require distillation of the information into a more consumable format, and Netmux has already done that.

Many of the items in the book are also transformed into a security mindset – e.g., interacting with cloud platforms like AWS or GCP. Rather than trying to provide the information necessary to operate those platforms, the books focuses on the aspects relevant to security practitioners. The book also contains links to additional references, which is yet another reason you want to have this in a digital format. Some kind of URL shortener links would have been a nice touch for the print version.

One thing that I really want to applaud in this book is that there is a reference for mental health in the book. Whether or not the information security industry has a particular predisposition for mental health issues, I absolutely love the normalization of discussing mental health issues.

While there is content for both Red and Blue teamers, like so many resources, it seems to tend to the Red. Maybe it’s only my perception as a Red Teamer, maybe some of the contents I perceive as “Red” are also useful to Blue teamers. I’d love to hear from someone on the Blue side as to how they find the book contents for their role – any takers?

Overall, I think this is a useful book. A lot of effort clearly went into curating the content and covering the wide variety of topics that is included in it’s 123 references. There’s probably nothing ground-breaking in it, but it’s just presented so well that it’s totally worth having.


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