Data analysis programs for the UNIX operating system
1980; Springer Science+Business Media; Volume: 12; Issue: 5 Linguagem: Inglês
10.3758/bf03201835
ISSN1554-3528
Autores Tópico(s)Software Engineering Research
ResumoThe UNIX! operating system is a program development and text editing facility developed at Bell laboratories (Richie & Thompson, 1974, 1978).UNIX is a highly interactive operating system, and because of this, it is an ideal environment for data analysis.Although the programs to be described were developed for use on UNIX, they are adaptable for use in other programming environments.In this paper, I will briefly describe how UNIX users control the flow of data through programs, then describe a facility for transforming and formatting data, and, finally, describe three useful programs.These programs are easy to use and require little knowledge of statistics or computers. USING UNIXUNIX users generally sit in front of a terminal at which they repeatedly specify a program, the input to that program, and where the output from the program should be directed.The default input to a program is called the "standard input," and the default output is called the "standard output."If the user does not override where the standard input comes from or where the standard output goes, UNIX assumes the terminal keyboard and screen, respectively, are desired.To input some data to a program that reads from the standard input, a user can redirect the data from a me with the "<" symbol.Thus, program < file indicates to UNIX that the input to the program "program" is to be read from the me "file" rather than from the terminal keyboard.Analogously, the output from a program can be redirected to a me with the ">" symbol.Thus,
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