> ## Content Index > Fetch the complete content index at: https://itsfoss.com/llms.txt > Use this file to discover other available public pages before exploring further. # Happy 34th Birthday Linux! - URL: https://itsfoss.com/facts-linux-kernel/ - Published: 2015-10-04T21:34:38.000Z - Updated: 2025-08-25T11:08:41.000Z - Description: Linux project was announced 34 years ago. - Author: Abhishek Prakash - Tags: History, Trivia & Nostalgia 🗓 Starting with some fun facts: If you did not know already, Linux has two birthdays each year. On **25th August 1991**, 21-year-old Finnish computer science student **Linus Torvalds** sent a mail announcing that he was working on a new operating system which was ‘*just a hobby, won’t be big and professional*’. ![Linus Torvalds announcement email of Linux](https://itsfoss.com/content/images/wordpress/2015/10/linux-first-announcement-email.png) Linus Torvalds announced project Linux On **5th October 1991**, he released the first Linux Kernel. Needless to say, this “little hobby project” has changed the world of computing. Over the years, the Linux community has often been confused over which of the two days should be considered as the birthday of Linux. And thus we end up having two birthdays for Linux. No matter when you celebrate the birthday of the Linux Kernel, let me list out some interesting facts about Linux that would certainly amaze you. **Suggested Read 📖** [What is Linux? Why There are 100’s of Linux OS?Cannot figure out what is Linux and why there are so many of Linux? This analogy explains things in a simpler manner.![](https://itsfoss.com/content/images/size/w256h256/2022/12/android-chrome-192x192.png)It's FOSSAbhishek Prakash![](https://itsfoss.com/content/images/wordpress/2020/03/too-many-linux-choices.png)](https://itsfoss.com/what-is-linux/) ## 32 Interesting Facts about Linux - The first Linux Kernel, version 0.01, had just **10,239 lines of code** (Source: [Wikipedia](https://en.wikipedia.org/wiki/Linux%5Fkernel?ref=itsfoss.com)) - Linux is not an OS, it is a kernel. Explore [what Linux is](https://itsfoss.com/what-is-linux/) if you are curious. - The Linux Kernel has crossed **1.2 million code commits** (Source: [GitHub](https://github.com/torvalds/linux?ref=itsfoss.com)) - The Linux Kernel today has well **over 30 million lines of code** as of 2022\. (Source: [Ubuntu](https://ubuntu.com/blog/an-overview-of-live-kernel-patching?ref=itsfoss.com)) - The most popular programming language used for the Linux Kernel is **C**, with nearly 98% of code written in C. (Source: [GitHub](https://github.com/torvalds/linux?ref=itsfoss.com)) - There are **272 active Linux distributions** as per the information available in [Distrowatch](https://distrowatch.com/search.php?ostype=All&category=All&origin=All&basedon=All¬basedon=None&desktop=All&architecture=All&package=All&rolling=All&isosize=All&netinstall=All&language=All&defaultinit=All&status=Active&ref=itsfoss.com#simple) (there could be even more!) - Did you know that **Android is built on top of the Linux Kernel**? Even if it is heavily modified, Android functions because Linux exists. - **Linux is everywhere**, ranging from servers to routers. Whether it is a device for personal or enterprise usage, chances are it can run Linux or already runs on it. ![thoughtful android robot. 3d illustration. contains clipping path](https://itsfoss.com/content/images/wordpress/2021/06/linux-android.jpg) Android is built on top of Linux Kernel - Today, over **80% of Linux contributions come from developers paid by big enterprises**. Intel tops the list of contributors for most of the Linux Kernel releases. However, you will also notice contributions by Huawei, AMD, NVIDIA, Red Hat, Google, Samsung, SUSE and many other companies like Facebook. - Though it was Linus Torvalds who wrote the Linux Kernel initially, he hardly codes anything today. However, he is actively responsible for managing and merging codes written by other developers. - The **majority of websites** that you visit on the Internet run on Linux-based servers. ![web hosting concept computer server database storage white isolated background with flat outline style](https://itsfoss.com/content/images/wordpress/2021/06/linux-websites.jpg) Most of the popular websites are powered by Linux servers - While not an enormous number, as of October 2021, Linux as a desktop OS has a **market share of 3.13%**. (Source: [Linux Market Share insights](https://itsfoss.com/linux-market-share/)) - Even though Linux may not be the most preferred desktop choice, it is a popular choice for developers/programmers worldwide. Hence, Microsoft introduced [Windows Subsystem for Linux](https://docs.microsoft.com/en-us/windows/wsl/about?ref=itsfoss.com) to let Windows users easily access Linux tools without dual booting. - Linus Torvalds wanted to name the project **Freax** (combination of free and Unix) but his colleague had created an FTP server named Linux (combination of Linus and Unix) for the project already. So, the project continued to be called Linux. ![linux in space](https://itsfoss.com/content/images/wordpress/2021/06/linux-in-space.jpg) Linux in space - Space programs by **NASA, SpaceX**, and many other space agencies rely on Linux. - The **International Space Station runs Linux** since 2013. - The first GUI that ran on Linux was [X Window System](https://en.wikipedia.org/wiki/X%5FWindow%5FSystem?ref=itsfoss.com). It ran on Linux Kernel version 0.95. - [MCC Interim Linux](https://en.wikipedia.org/wiki/MCC%5FInterim%5FLinux?ref=itsfoss.com) was the first Linux distribution available for public download in February 1992\. It was based entirely on the command line. - Created in 1993, [Slackware](https://en.wikipedia.org/wiki/Slackware?ref=itsfoss.com) is [one of the oldest Linux distribution](https://itsfoss.com/earliest-linux-distros/) which is still in development. - The Linux kernel started using [GPL](https://en.wikipedia.org/wiki/GNU%5FGeneral%5FPublic%5FLicense?ref=itsfoss.com) license from version 0.12\. Initial license forbade any commercial usage. - On **15 August 1994**, William R. Della Croce, Jr. filed for the trademark Linux, and then demanded royalties from Linux distributors. After court battles, Linus Torvalds got the trademark rights back in 1997. - Linux is used as a product name to **describe a furnace** by a Denmark-based company. (Source: [Varde](https://vardeovne.dk/products/linux-3?ref=itsfoss.com)) - Linux is a **genuine washing powder** brand in Switzerland. ![Linux washing powder](https://itsfoss.com/content/images/wordpress/2015/10/linux-washing-powder.jpg) - [Linux runs on 100% of world’s top 500 supercomputers](https://itsfoss.com/linux-runs-top-supercomputers/). - Commercial Linux enterprise [Red Hat](http://www.redhat.com/en?ref=itsfoss.com) is perhaps the first [billion dollar open source company](http://readwrite.com/2012/10/23/looking-for-the-next-1-billion-open-source-company?ref=itsfoss.com). - Microsoft CEO Steve Ballmer once called [Linux cancer](http://www.theregister.co.uk/2001/06/02/ballmer%5Flinux%5Fis%5Fa%5Fcancer/?ref=itsfoss.com). In 2016, [Microsoft created its own Linux distribution](http://www.theregister.co.uk/2015/09/18/microsoft%5Fhas%5Fdeveloped%5Fits%5Fown%5Flinux%5Frepeat%5Fmicrosoft%5Fhas%5Fdeveloped%5Fits%5Fown%5Flinux/?ref=itsfoss.com) and has been showing appreciation for Linux as a platform since then. - America’s [NSA had approached Linus Torvalds in order to create backdoors in Linux Kernel](https://www.theregister.co.uk/2013/09/19/linux%5Fbackdoor%5Fintrigue/?ref=itsfoss.com). Linus said no this ‘request’. - Linux-based operating systems support a wide range of architecture/computing platforms, unlike any other operating system. - The Linux Kernel was the first OS kernel to support x86-64 in 2001. - Linux isn’t just used on Earth. To get insights of life on Mars, a crucial mission was planned by NASA in 2020 where the robotic helicopter that accompanies the rover on Mars runs on Linux. Essentially, Linux landed on Mars and is flying as you read this. - Linux was the first desktop operating system that introduced USB 3.0 drivers. - Linux is the largest software project on the planet, where a huge number of developers and companies collaborate remotely.