Direct in the sense of being in a direct line from the "first" operating system, as follows:
- the Mock-Donald System
- SOS
- IBSYS
- CTSS
- Multics
- Unix (v6, v7, System 3, SysV, SCO)
- BSD
- Linux
The Mock-Donald system for the IBM 704 has been called the first operating system. It evolved into the SHARE Operating System, which evolved into IBM's operating system for the 709x series, IBSYS. IBSYS was the state of the art and well known to the developers of CTSS. Many of these people went on to work on the next big Project MAC system, Multics, including Thompson and Ritchie who took from it a lot of inspiration for Unix. BSD evolved from Unix and is worth mentioning for all the technology it added, especially the network stuff. Linux (plus GNU) is the most popular of several clones of Unix/BSD/SysV built to be free software, and a worthy descendant of those earlier breakthrough systems.
Thanks for the mirror, my DSL line was totally maxed! Its still pretty busy two days later but nothing crashed, only the log filled up.
CTSS isn't the only old thing on my site, there are photos of a little of my collection and a few scanned documents there now (including SOS, an earlier operating system) with much more to come in the next couple of years. Enjoy!
Slashdot Mirror
Direct in the sense of being in a direct line from the "first" operating system, as follows:
- the Mock-Donald System
- SOS
- IBSYS
- CTSS
- Multics
- Unix (v6, v7, System 3, SysV, SCO)
- BSD
- Linux
The Mock-Donald system for the IBM 704 has been called the first operating system. It evolved into the SHARE Operating System, which evolved into IBM's operating system for the 709x series, IBSYS. IBSYS was the state of the art and well known to the developers of CTSS. Many of these people went on to work on the next big Project MAC system, Multics, including Thompson and Ritchie who took from it a lot of inspiration for Unix. BSD evolved from Unix and is worth mentioning for all the technology it added, especially the network stuff. Linux (plus GNU) is the most popular of several clones of Unix/BSD/SysV built to be free software, and a worthy descendant of those earlier breakthrough systems.
- Paul Pierce
Thanks for the mirror, my DSL line was totally maxed!
Its still pretty busy two days later but nothing crashed, only the log filled up.
CTSS isn't the only old thing on my site, there are photos of a little of my collection and a few scanned documents there now (including SOS, an earlier operating system) with much more to come in the next couple of years. Enjoy!
- Paul Pierce