The Sand Dollar Legend. Described in The Legend of the Sand Dollar below, it's design by God ,the Creator, tells the good news of the Gospel of Jesus Christ! This makes a wonderful Christian object lesson for kids of any age! One of my favorite activities as a child was finding sea shells at the beach. Although, I didn't live near a beach, my oldest sister did.
Linux is referred to as open-source precisely because it is. Open-source is the ability for anyone to view the code necessary to make the program. The Linux kernel, and most of the programs that are available for it, have their source code available, under a variety of licenses. Linux is referred to as open-source precisely because it is.
In fact, Linux was born as an alternative to UNIX Penguin Origins: The History of Linux [Geek History] with the goal of being UNIX-compatible, which explains why the two have a lot of similarities and why they are often conflated. In that sense, Linux is a UNIX-like, not a UNIX-based, operating system. In other words, Linux was influenced by UNIX, but UNIX systems have no relation to Linux. With that said, here are some of the more important UNIX systems that still exist today and are worth knowing about.