Differences

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--- os [2018/05/11 07:10] – created theguru
+++ os [2020/12/25 23:08] (current) – external edit 127.0.0.1
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 The easiest to define is the Windows OS.
+When you say "Windows OS" you are probably
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 "Linux, the kernel, is often thought of as the flagship of free software, yet its current version is partially non-free." (1) https://www.gnu.org/philosophy/linux-gnu-freedom.html
-Think of the Linux kernel as the core of an internal combusion engineer that was free to use in designing an automobile. Now you start to see the interesting mix of free versus commercial software in the various versions.
+Think of the Linux kernel as the core of an internal combustion engineer that was free to use in designing an automobile. Now you start to see the interesting mix of free versus commercial software in the various versions.
 Red Hat Enterprise Linux (RHEL) is a Linux distribution developed by Red Hat and targeted toward the commercial market.  Fedora is a Linux distribution developed by the community-supported Fedora Project sponsored by Red Hat.
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 https://www.techworm.net/2016/11/difference-linux-unix-operating-systems.html
-What is the difference between Linux and UNIX operating systems?
+**What is the difference between Linux and UNIX operating systems?**
+Evolution of Operating systems from Unix
+https://unix.stackexchange.com/questions/3196/evolution-of-operating-systems-from-unix
+Default user interface	Command-line interface
+One day in the late 1960s, Ken Thompson, Dennis Ritchie and a few of their colleagues at AT&T Bell Labs decided to write a simpler version of Multics to run games on their PDP-7, and thus Unix was born.  AT&T held the rights to the code, and licenses were expensive.
+Meanwhile, in Berkeley, a number of academics were unhappy with the licensing situation and decided to create a version of Unix that didn't include any AT&T-licensed code. Thus in the early 1980s the Berkeley Software Distribution, or BSD, became a free variant of Unix. BSD first ran on Minicomputers such as PDP-11 and VAXen.
+The designation "Linux" was initially used by Torvalds only for the Linux kernel. The kernel was, however, frequently used together with other software, especially that of the GNU project. This quickly became the most popular adoption of GNU software. In June 1994 in GNU's bulletin, Linux was referred to as a "free UNIX clone",

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