TOPS-20 --> UNIX

[Mark Fulk]

Of great interest in this connection is the "TOOLS" project at Yale.
The authors (Ellis, van Leunen, Mishkin, Nix, et al) have replaced most
of the standard TOPS-20 utilities with their own and generally regularized
the TOPS-20 environment; they have made many of the potential capabilities
of the TOPS-20 kernel usable (background processes, etc.)  The main part
of the work seems to have been to replace TOPS-20 EXEC with their own version
(MUF, similar to the shell); to write a screen mode editor (Z), and to
provide mail and news systems.  They seem to have stolen from any source
with good ideas, mainly from UN*X, and my friends from Yale praise the
results to the skies.  Descriptions are available as Yale CS Dept.
tech reports nos. 231 and 232.