Introduction to Linux operating system

Linux kernel was developed by Linus Trovalds while he was at University of Helsinki. Linux operating system has mentality of being open source and free.


Free does not mean that companies cannot charge. Good example of this is RedHat. Even so source code of RedHat Linux is available, and people can get it for free, people still need to pay for support. Support is optional, if there is skills and knowledge to support Linux installations, then a person may not need one.


It is one thing to have a downtime of a personal computer at home, but it is another thing to have a downtime of a server at an enterprise.


Today Linux had grown beyond just a kernel, it has a few major distributions, which have commercial support for them. Linux distributions have not just command line interface. Linux distributions have other software, they have several graphical user interfaces.

https://distrowatch.com web site can be used to identify popularity of Linux distributions.

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