Celebrating 50 years of the UNIX Operating system

unix50.org is a service of the SDF Public Access UNIX System!
Find out more about the SDF at sdf.org

When you connect you'll be able to CREATE and DESTROY an entire UNIX system on a whim.
Use unix50.org to learn about old and significant versions of UNIX on emulated hardware.

UNIX Systems available

  UNICS (Version Zero)   PDP-7       Summer   1969
  First Edition UNIX     PDP-11/20   November 1971
  Fifth Edition UNIX     PDP-11/40   June     1974
  Sixth Edition UNIX     PDP-11/45   May      1975
  Seventh Edition UNIX   PDP-11/70   January  1979
  Research UNIX 8        VAX-11/750           1981
  AT&T UNIX System III   PDP-11/70   Fall     1982
  AT&T UNIX System V     PDP-11/70            1983
  AT&T UNIX System V     3b2/400              1984
  4.3 BSD                MicroVAX    June     1986
  2.11 BSD               PDP-11/70   January  1992


There are two methods of connecting:

  • ssh client such as putty or OpenSSH on macos/bsd/linux
  • ex. ssh unix50@unix50.org - password is unix50

  • Use the SDF HTML5 SSH site
  • Visit: ssh.sdf.org
  • Just press '[ENTER]' and login as user 'unix50' - password is unix50

    How To Do STUFF?

    Check out the SDF User Contributed Tutorials and WIKI

  • sdf.org?tutorials/unix50th
  • wiki.sdf.org