From: Fleck Jean-Julien <jeanjulien.fleck@...>
Date: 2009-08-14T01:13:27+09:00
Subject: Re: newbie question making a folder with ruby

>>
>> What kind of error did you get and what is the code you used ?
>
> p File.exists?('~/Documents/fake/nonexistant/directories/new_dir')
> #=>false
> p Dir.mkdir('~/Documents/fake/nonexistant/directories/new_dir')
> #=>0
> p File.exists?('~/Documents/fake/nonexistant/directories/new_dir')
> #=>true
> p Dir.mkdir('~/Documents/fake/nonexistant/directories/new_dir')
> #=>:[-1,-1]:[0,0]: File exists -
> ~/Documents/fake/nonexistant/directories/new_dir (Errno::EEXIST)
> p File.exists?('~/Documents/fake/nonexistant/directories/new_dir')
> #=>true

So, everything is working fine: you just can't call Dir.mkdir on an
existant file. That's why you have to use File.exist? to ensure your
directory is not yet in place:

if File.exist?(dir)
  puts "#{dir} already exists !"
else
  Dir.mkdir(dir)
end

Cheers,

-- 
JJ Fleck
PCSI1 Lycée Kleber