Unix history
In this section, we are going to give a bit of history about Unix. This is not a history book, so we're going to keep it short and straight to the point, but the goal here is to gain some hints of history in order to develop a basis for having Unix side by side with C forever in your minds.
Multics OS and Unix
Even before having Unix, we had the Multics OS. It was a joint project launched in 1964 as a cooperative project led by MIT, General Electric, and Bell Labs. Multics OS was a huge success because it could introduce the world to a real working and secure operating system. Multics was installed everywhere from universities to government sites. Fast-forward to 2019, and every operating system today is borrowing some ideas from Multics indirectly through Unix.
In 1969, because of the various reasons that we will talk about shortly, some people at Bell Labs, especially the pioneers of Unix, such as Ken Thompson and Dennis Ritchie, gave up on Multics and...