Notes on Linux

  Unix was first developed by Ken Thompson in the summer of 1969 on the DEC PDP-7 minicomputer. By 1979 Unix version 7 was making the rounds at universities all over the world. Bell Labs Unix has enormous importance: It was the basis for many operating systems that followed including BSD, and the template for Minix and Linux.

  In 1987 Andrew S. Tanenbaum created Minix version 1 which was system call compatible with Unix v7.

  Richard Stallman made note of the importance of the C compiler (it's importance can not be exaggerated): an efficient way to compile programs. That was the reason why he wrote gcc, perhaps one of the most vital parts of GNU. We must remember though that the template for gcc is the original cc created by Dennis Ritchie.

 
  On Jauary 23rd 2002 Caldera released a license for people to use Unix versions 1 through 7 and also the early 32-bit 32V Unix. Nowadays folks can use the computer emulator simh and run early Unix on modern computers.