<div dir="ltr">Hello Horace, I thank you for patiently explaining me how to run racket from command line. Actually, this is not exactly what I am looking for. What I want is a script file. Such that I can test the modules of the program from command prompt. Something like ******* #!/bin/bash racket -f "file.rkt" racket (twice 2) ******* Thanks in advance, Colum <div class="gmail_quote">On Mon, Sep 27, 2010 at 4:39 PM, Horace Dynamite <<a href="mailto:horace.dynamite@gmail.com">horace.dynamite@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">> Say, the racket file is file.rkt > > *********** > (define (twice x) > (* 2 x)) > > and so on.... > > ********** > > I want to test if (twice 2) is 4 from the command line. </div>You need to know what "folder" or "directory" you saved the file in. Lets say it's in C:\racket\ Click Start -> Run and type "cmd" (without the quotes) Then type (again, without quotes) "cd C:\racket\" (or you could pass the full path to enter! (see below) instead) If the racket executable is in your path, you should be able to type "racket.exe" and have the racket program waiting for your input. If this is not the case, you need to find out where your racket executable is. Try "C:\program files\Racket\racket.exe". If that doesn't work, hunt through you're program files folder to see where you installed Racket. Once the racket program is waiting on your input, type "(enter! "file.rkt")" and you should be all set, then you may type "(twice 2)" and see the result. This will only work if you "cd"'d into the correct folder above. More experienced users have made running racket from the "command line" like this more convenient by setting up their favourite editor to automatically launch the racket program, and to make sure it's in the folder their racket files are located. If this all sounds too complicated (it does to me), I'd strongly suggest you use DrRacket. Hope that helps, Horace. </blockquote></div> </div>