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- .\" @(#)p0 6.1 (Berkeley) 5/23/86
- .\"
- .EH 'USD:2-%''LEARN \(em Computer-Aided Instruction on UNIX'
- .OH 'LEARN \(em Computer-Aided Instruction on UNIX''USD:2-%'
- .\".RP
- ....TM "79-1274-xx 79-1273-yy" 39199 39199-11
- ....ND June 18, 1976
- ....TM "76-1274-6 76-1273-5" 39199 39199-11
- .TL
- LEARN \(em Computer-Aided Instruction on UNIX
- .br
- (Second Edition)
- .AU "MH 2C-518" 6021
- Brian W. Kernighan
- .AU "MH 2C-569" 6377
- Michael E. Lesk
- .AI
- .MH
- .AB
- .PP
- This paper describes the
- second version of the
- .I
- learn
- .R
- program for interpreting CAI
- scripts on
- the
- .UX
- operating system,
- and a set of scripts that provide a computerized introduction
- to the system.
- .PP
- Six current scripts cover basic commands and file
- handling, the editor, additional file handling commands, the
- .I
- eqn
- .R
- program for mathematical
- typing,
- the ``\-ms'' package of formatting macros,
- and an introduction to the C programming language.
- These scripts now include a total of
- about 530 lessons.
- .PP
- Many users from a wide variety of backgrounds have used
- .I learn
- to acquire basic UNIX skills.
- Most usage involves the first two scripts,
- an introduction to
- .UX
- files and commands, and
- the
- .UX
- editor.
- .PP
- The second version of
- .I learn
- is about four times faster than the previous one
- in CPU utilization,
- and much faster in perceived time
- because of better overlap of computing and printing.
- It also requires less file space than the first version.
- Many of the lessons have been revised;
- new material has been added to reflect changes
- and enhancements in
- .UX
- itself.
- Script-writing is also easier
- because of revisions to the script language.
- .AE
- .CS 11 2 13 4 0 0
-