Research Unix，是一系列的Unix操作系统的通称，由贝尔实验室的计算机科学研究中心（Computing Science Research Center，部门编号1127）研发，因此得名，共有10个版本。这些Unix系统运行在DEC PDP-7，PDP-11，VAX，以及Interdata 7/32与8/32电脑上。
版本
| Manual Edition | Release date | Description |
|---|---|---|
| 1st Edition | Nov. 3, 1971 | First edition of the Unix manual, based on the version that ran on the PDP-11 at the time. Includes the Thompson shell, mail, cp, and su. The operating system was two years old,[1]having been ported from the PDP-7 to the PDP-11/20 in 1970. |
| 2nd Edition | Jun. 12, 1972 | Total number of installations at the time was 10, "with more expected", according to the preface of the manual.[2]:ii Includes echo and the first C compiler.[1] |
| 3rd Edition | Feb. 1973 | Introduced the C programming language, pipes, crypt, and yacc. Commands are split between /bin and /usr/bin, requiring a search path[1](/usr was the mountpoint for a second hard disk). Total number of installations was 16.
|
| 4th Edition | Nov. 1973 | First version written in C. Also introduced groups, grep, and printf.[1]Number of installations was listed as "above 20". The manual was formatted with troff for the first time. Version described in Thompson and Ritchie's CACM paper,[3]the first public exposition of the operating system.[1] |
| 5th Edition | Jun. 1974 | Widely licensed to educational institutions.[4] Introduced find, dd,[1] and the sticky bit. Targeted the PDP-11/40 and other 11 models with 18 bit addresses. Installations "above 50". |
| 6th Edition | May 1975 | Includes ratfor and bc.[1] First version to be also licensed to commercial users,[4]and to be ported to non-PDP hardware. May 1977 saw the release of MINI-UNIX, a "cut down" v6 for the low-end PDP-11/10. |
| 7th Edition | Jan. 1979 | Includes the Bourne shell, cpio, sed, ioctl, awk, f77, spell, and stdio.[1] The ancestor of all modern UNIX systems and the last release of Research Unix to see widespread external distributions. Merged most of the utilities of PWB/UNIX with an extensively modified kernel with almost 80% more lines of code than V6. In February, a port called 32V was made to DEC's VAX hardware; 32V was the basis for 4BSD. |
| 8th Edition | Feb. 1985[来源请求] | A modified 4.1cBSD for the VAX, with a System V shell and sockets replaced by Streams. Used internally, and only licensed for educational use.[5]The Blit graphics terminal became the primary user interface.[1]Added a network filesystem that allowed accessing remote computers' files as /n/hostname/path, and a regular expression library that introduced an API later mimicked by Henry Spencer's reimplementation.[6]First version with no assembly in the documentation.[1]
|
| 9th Edition | Sep. 1986 | Incorporated code from 4.3BSD; used internally. Featured a generalized version of the Streams IPC mechanism introduced in V8. The mount system call was extended to connect a stream to a file, the other end of which could be connected to a (user-level) program. This mechanism was used to implement network connection code in userspace.[7]Other innovations include make and Sam.[8]According to Dennis Ritchie, V9 and V10 were "conceptual": manuals existed, but no OS distributions "in complete and coherent form".[5] |
| 10th Edition | Oct. 1989 | Last Research Unix. Although the manual was published outside of AT&T by Saunders College Publishing,[9]there was no full distribution of the system itself.[5]Novelties included graphics typesetting tools designed to work with troff, a C interpreter, animation programs, and several tools later found in Plan 9: the Mk build tool and the rc shell. V10 was also the basis for Doug McIlroy and James A. Reeds' multilevel-secure operating system IX.[10] |
注释
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 McIlroy, M. D. A Research Unix reader: annotated excerpts from the Programmer's Manual, 1971–1986 (PDF) (技术报告). CSTR. Bell Labs. 1987 [2015-06-01]. 139.
- ↑ Thompson, Ken; Ritchie, Dennis M. UNIX Programmer's Manual, Second Edition (PDF). Bell Telephone Laboratories. 1972-06-12 [2015-06-01].
- ↑ Ritchie, D. M.; Thompson, K. The UNIX Time-Sharing System. CACM. 1974, 17 (7): 365–375 [2015-06-01].
- ↑ 4.0 4.1 Fiedler, Ryan. The Unix Tutorial / Part 3: Unix in the Microcomputer Marketplace. BYTE. 1983-10: 132.
- ↑ 5.0 5.1 5.2 Dennis Ritchie. [TUHS] Re: V7 UNIX on VAX 11/750. 2003-06-27 [2014-04-09].
- ↑ Henry Spencer. regexp(3). Newsgroup: mod.sources. 1986-01-19. Usenet: 1316@panda.UUCP.
- ↑ David L. Presotto; Dennis M. Ritchie. Interprocess Communication in the Ninth Edition Unix System. Software—Practice and Experience. 1990, 19 [2015-06-01].
- ↑ M. D. McIlroy (1987). A Research Unix reader: annotated excerpts from the Programmer's Manual, 1971–1986 . CSTR 139, Bell Labs.
- ↑ Unix Tenth Edition Manual. Bell Labs. [2013-12-25].
- ↑ The IX Multilevel-Secure UNIX System. [2015-06-01].