<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>6754</REFNUM><AUTHORS><AUTHOR>Hall,D.</AUTHOR><AUTHOR>Scherrer,D.</AUTHOR><AUTHOR>Sventek,J.S.</AUTHOR></AUTHORS><YEAR>1980</YEAR><TITLE>A Virtual Operating System</TITLE><PLACE_PUBLISHED>Communications of the ACM, Vol. 23, No. 9, September 1980 </PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><LABEL>Hall:1980:6754</LABEL><ABSTRACT>Moving to a new system is costly and error-prone.k The problem can be reduced through use of a virtual operating system that distentangles computing enviornments from their underlying operating systems. The authors report on their successful experience in doing this and achieving inter-system uniformity at all three levels of user interface: virtual machine, utilities, and command language.</ABSTRACT></RECORD></RECORDS></XML>