Really basic Ruby question


#1

I’m learning Ruby from the Learn to Program tutorial by Chris P…

On http://pine.fm/LearnToProgram/?Chapter=01, he mentions saving a
calc.rb file after typing in “puts 1 + 2” in my text editor , then
going to the command line and typing “ruby calc.rb”, and getting the
results “3” returned.

I am not getting this result; instead I’m getting a message that the
file or directory can’t be found. I’m using the built-in Scintilla text
editor which comes with Ruby.

How do I get the command line to see the saved file?

Thanks in advance for your assistance.


#2

Hi,

Looks like you are using Scite editor. If so, you can press F5 and see
program output directly in Scite.


Martins


#3

What directory is the saved file in would be my first question.

ruby /path/to/calc.rb

would be the first thing that comes to mind.

David Newberger
651.271.9045
removed_email_address@domain.invalid
http://www.davidnewberger.com


#4

Have you saved the program to file called ‘calc.rb’ and run ‘ruby
calc.rb’ from the directory it’s in?


#5

removed_email_address@domain.invalid wrote:

How do I get the command line to see the saved file?

You may be opening the command prompt in some default home directory,
which is not the same place where you saved the Ruby file.

When you save the file in Scintilla, make sure you save it to c:\calc.rb

Then, when you get a command prompt, go to the C: drive, then change to
the root drive:

c:> cd \

Then try running ruby calc.rb.

If that works, all is good.

You will probably be able to run it by just typing the file name and
hitting Enter, too, if the Ruby installation set up the filetype
execution association for you.

Now, I don’t generally advocate saving your files to the root of the C:
drive, so decide where you want to place the files, and then just figure
out how to navigate there once you have a command prompt.


James B.

“In Ruby, no one cares who your parents were, all they care
about is if you know what you are talking about.”

  • Logan C.

#6

On 25 Mar 2006, at 20:03, removed_email_address@domain.invalid wrote:

Thank you. It works!

If you are learning, you might want to try the interactive ruby
interpreter: irb. That will save you writing things, saving them, and
trying them. For simple tests it is very quick. To use it, go to your
command line and type:

irb

And then you’re be able to type “puts 1 + 2” and see the result
directly.

Have fun anyway!

Cheers,
Benjohn


#7

Thank you. It works!


#8

Thank you very much for the suggestion.