From: "Roger B. Atkins" <roger-b-atkins@...>
Date: 2010-01-01T11:25:31+09:00
Subject: Re: Path problems

Thanks Darryl.  I used SciTE to put your code in a file named test3.rb and saved it.  I closed the file, opened it again, pressed F5 and:

 >ruby test3.rb
 >The system cannot find the file specified.

Then I saved the file to the same directory where ruby is located, 
closed it, opened it again in SciTE and it worked:

 >ruby test3.rb
reveal Filename and Dirname attributes

 a - the current directory => .
 b - the current filename => test3.rb
 c - the current directory and filename => test3.rb
 d - same output as 'a' only using $0 => .
 e - same as 'c' only using  $0 => test3.rb
 f - same as 'c' only using $PROGRAM_NAME => test3.rb
 >Exit code: 0

In between attempts, I did some playing at the command prompt.  In the 
process I remembered that DOS doesn't recognize directory names 
containing multiple words with spaces between them.  Since my earlier 
source files are all in a directory named "Ruby Files", I thought the 
directory name might be part of the problem.  I changed the directory 
name to RubyFiles, but it did not solve the problem.

I notice that now SciTE shows "ruby test3.rb" before the results, 
whereas earlier it was just showing the file name without "ruby " in 
front of it.  Perhaps the active directory changed in SciTE.

Anyway, I will put all my files in the directory with ruby since I can't 
seem to control SciTE.

Thanks again and Happy New Year!

    RBA


Darryl (gem dandy) Brown wrote:
> On Dec 31, 7:12 pm, Luis Lavena <luislav...@gmail.com> wrote:
>   
>> On Dec 31, 9:01 pm, "Roger B. Atkins" <roger-b-atk...@cox.net> wrote:
>>
>>     
>>> Thanks Darryl.
>>>       
>>> The error message:
>>>  >ruby Test2.rb
>>>  >The system cannot find the file specified.
>>>       
>> are you invoking ruby in the directory where "Test2.rb" exist?
>>
>> Also, is the file named "Test2.rb" and not "test2.rb", things are case
>> sensitive sometimes.
>>
>> --
>> Luis Lavena
>>     
>
> Hello again Roger,
>
> Sorry if I threw too much at you....
> (__FILE__) is a ruby keyword that holds the dir & file of the
> program that it's used in.
>
> Copy the below snippet into a file and run it for a better feel.
>
>
>
> $:.unshift File.dirname(__FILE__) unless
> $:.include? File.dirname(__FILE__)
>
> puts "reveal Filename and Dirname attributes \n\n"
> a = File.dirname(__FILE__)
> b = File.basename(__FILE__)
> c = (__FILE__)
> d = File.dirname $0
> e = $0
> f = $PROGRAM_NAME
>
> puts " a - the current directory => #{a}"
> puts " b - the current filename => #{b}"
> puts " c - the current directory and filename => #{c}"
> puts " d - same output as 'a' only using $0 => #{d}"
> puts " e - same as 'c' only using  $0 => #{e}"
> puts " f - same as 'c' only using $PROGRAM_NAME => #{f}"
>
>
>
> Regards,
> Darryl
>
>
>