Indiana University
University Information Technology Services
What are archived documents?

Login is for authorized groups (e.g., UITS, OVPIT, and TCC) that need access to specialized Knowledge Base documents. Otherwise, simply use the Knowledge Base without logging in.



In the middle 1970s, around the time Version 6 was released, AT&T began to license its Unix operating system. At little or no cost, individuals and organizations could obtain the C source code. When the University of California at Berkeley received the source code, Unix co-creator Ken Thompson was there as visiting faculty. With his help, researchers and students, notably Sun co-founder Bill Joy, improved the code and developed the Berkeley Software Distribution (BSD). Funded by a grant from DARPA, the Berkeley Computer Systems Research Group (CSRG) was the most important source of Unix development outside of Bell Labs. Along with AT&T's own System V, BSD became one of the two major Unix flavors.

Compared to System V, BSD was more experimental and innovative. It was favored more by academic and research institutions than commercial enterprises, but strongly influenced the entire Unix world. Unix mainstays such as the C-shell, vi, TCP/IP, and virtual memory all made their first appearances in BSD releases. Sun Microsystem's SunOS was a direct descendant of BSD 4.2, and System V was rewritten in its fourth release to incorporate many BSD features. Many Unix systems are descended from System V release 4 (SVR4), implying a significant, but indirect, BSD influence.

The last version of BSD to come from Berkeley was BSD 4.4, released in 1993. Most BSD systems today are based on BSD 4.4-lite, which is unencumbered by copyright-protected AT&T code. Three of these are freeware operating systems available primarily for IBM-compatible PCs:

Another prominent BSD-derived operating system is Darwin, which forms the basis of Mac OS X.

For forums about various aspects and implementations of BSD, consult the newsgroups in the comp.unix.bsd.* hierarchy.

At Indiana University, for personal or departmental Linux or Unix systems support, see At IU, how do I get support for Linux or Unix?

This is document agom in domain all.
Last modified on November 18, 2013.

I need help with a computing problem

  • Fill out this form to submit your issue to the UITS Support Center.
  • Please note that you must be affiliated with Indiana University to receive support.
  • All fields are required.

Please provide your IU email address. If you currently have a problem receiving email at your IU account, enter an alternate email address.

I have a comment for the Knowledge Base

  • Fill out this form to submit your comment to the IU Knowledge Base.
  • If you are affiliated with Indiana University and need help with a computing problem, please use the I need help with a computing problem section above, or contact your campus Support Center.