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Guile Reference Manual

5.1 Running Guile Interactively

In its simplest form, Guile acts as an interactive interpreter for the Scheme programming language, reading and evaluating Scheme expressions the user enters from the terminal. Here is a sample interaction between Guile and a user; the user's input appears after the $ and guile> prompts:

$ guile guile> (+ 1 2 3) ; add some numbers 6 guile> (define (factorial n) ; define a function (if (zero? n) 1 (* n (factorial (- n 1))))) guile> (factorial 20) 2432902008176640000 guile> (getpwnam "jimb") ; find my entry in /etc/passwd #("jimb" ".0krIpK2VqNbU" 4008 10 "Jim Blandy" "/u/jimb" "/usr/local/bin/bash") guile> C-d $