UT Austin, nearly 20 years ago. NFS and NIS and a locally-written authentication system meant you had the same home directory on any Unix machine you sat down at. Since your configuration was all in your home directory, personal configuration was also instant. A skilled and somewhat crazy sysadmin team meant that (almost) all of the programs that were available on one system were supported on all of them, so you had the same environment on any of about six different OS/hardware setups.
