Xv6

MIT's Operating System Engineering course formerly used the original V6 source code. xv6 was created as a modern replacement, because PDP-11 machines are not widely available and the original operating system was written in archaic pre-ANSI C. Unlike Linux or BSD, xv6 is simple enough to cover in a semester, yet still contains the important concepts and organization of Unix.[1]

One feature of the Makefile for xv6 is the option to produce a PDF of the entire source code listing in a readable format. The entire printout is only 99 pages, including cross references.[2] This is reminiscent of the original V6 source code, which was published in a similar form in Lions' Commentary on UNIX 6th Edition, with Source Code.

xv6 has been used in operating systems courses at many universities including University of Leeds,[3] Northwestern University,[4] The George Washington University,[5] Northeastern University,[6] Yale University,[7] Columbia University,[8] Ben-Gurion University,[9] Johns Hopkins University,[10] Portland State University,[11] Tsinghua University,[12] Southern Adventist University,[13] the University of Wisconsin–Madison,[14] Binghamton University, the University of Utah,[15] [16] University of California, Irvine, University of California, Riverside,[17] Georgia Tech,[18] IIIT Hyderabad, IIIT Delhi, IIIT Bangalore, IIIT Allahabad, MNNIT Allahabad IIT Bombay,[19] IIT Delhi, IIT Madras, IIT Bhubaneswar and PEC Chandigarh in India, the Linnaeus University[20] in Sweden, the University of Otago[21] in New Zealand, the National University of Córdoba,[22] the National University of Río Cuarto,[23] in Argentina, the Federico Santa María Technical University in Chile, the Università degli Studi di Palermo[24] University of Illinois at Chicago,[25] Rutgers University,[26] the Università degli Studi di Modena e Reggio Emilia[27] in Italy, the Iran University of Science and Technology (IUST),[28] and the University of Tehran[29] in Iran, Slovak University of Technology in Bratislava[30] in Slovakia, Federal University of Minas Gerais[31] in Brazil, the Technion – Israel Institute of Technology,[32] the Ben Gurion University In The Negev in Israel, and the University of Pittsburgh.[33]

• Operating Systems Engineering (6.828)

x86 (unmaintained):

• xv6 source code
• xv6 book source code
• xv6: a simple, Unix-like teaching operating system, xv6 book rev11.
• Printable version of the xv6 source code, rev11.

RISC-V:

• xv6 source code
• xv6 book source code
• xv6: a simple, Unix-like teaching operating system, xv6 book rev1.