From: Douglas Seifert <doug@...>
Date: 2013-04-28T06:04:27+09:00
Subject: Re: copying files syntax with FileUtils.rb (grr.)

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Besides what Henry said, it seems like you go through some extreme
gymnastics to create the path2 variable's value.  I'd do something like
this:

require 'fileutils'

filename = "just_a_file"
target_dir = "move_dir"

path1 = Dir.getwd
Dir.mkdir target_dir unless File.directory? target_dir

path2 = File.join path1, target_dir

puts "Copying '#{path1 }/#{filename}' -> '#{path2 }/#{filename}'"
FileUtils.cp "#{path1 }/#{filename}", "#{path2 }/#{filename}"



On Fri, Apr 26, 2013 at 3:44 PM, Thomas Luedeke <lists@ruby-forum.com>wrote:

> OK, I just spent about an hour fooling around and looking up string
> literals, and I'm still having lots of trouble with the *syntax* for
> this utility.  I freely admit it may be that I simply don't understand
> this.
>
> I want an example of how a local variable pathway and a local variable
> name can be used in FileUtils.cp.  Because I cannot get it to work
> cleanly.
>
> filename = "just_a_file"
>
> path1 = Dir.getwd
>
> Dir.mkdir( "move_dir" )
> Dir.chdir( move_dir )
> path2 = Dir.getwd
> Dir.chdir( path1 )
>
> FileUtils.cp( "#{path1 }/#{filename}", "#{path2 }/#{filename}" )
>
> This should work cleanly, since all local variables are within double
> brackets.  It actually does move the file, but still pukes out an
> exception:
>
> Exception `Errno::ENOENT' at
> /home/t3905/ruby/ruby-1.8.7-p22/lib/ruby/site_ruby/1.8/fileutils.rb:1420
> - No such file or directory -
> /home/t3905/test/ruby_move/move_test/just_a_file
>
> So what am I doing wrong??  I completely fail to understand the problem
> here.
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

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<div dir=3D"ltr">Besides what Henry said, it seems like you go through some=
 extreme gymnastics to create the path2 variable&#39;s value. =A0I&#39;d do=
 something like this:<br><br><div>require &#39;fileutils&#39;</div><div><br=
>
</div><div>filename =3D &quot;just_a_file&quot;</div><div>target_dir =3D &q=
uot;move_dir&quot;</div><div><br></div><div>path1 =3D Dir.getwd</div><div>D=
ir.mkdir target_dir unless File.directory? target_dir</div><div><br></div><=
div>
path2 =3D File.join path1, target_dir</div><div><br></div><div>puts &quot;C=
opying &#39;#{path1 }/#{filename}&#39; -&gt; &#39;#{path2 }/#{filename}&#39=
;&quot;</div><div>FileUtils.cp &quot;#{path1 }/#{filename}&quot;, &quot;#{p=
ath2 }/#{filename}&quot;</div>
<div><br></div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail=
_quote">On Fri, Apr 26, 2013 at 3:44 PM, Thomas Luedeke <span dir=3D"ltr">&=
lt;<a href=3D"mailto:lists@ruby-forum.com" target=3D"_blank">lists@ruby-for=
um.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">OK, I just spent about an hour fooling aroun=
d and looking up string<br>
literals, and I&#39;m still having lots of trouble with the *syntax* for<br=
>
this utility. =A0I freely admit it may be that I simply don&#39;t understan=
d<br>
this.<br>
<br>
I want an example of how a local variable pathway and a local variable<br>
name can be used in FileUtils.cp. =A0Because I cannot get it to work<br>
cleanly.<br>
<br>
filename =3D &quot;just_a_file&quot;<br>
<br>
path1 =3D Dir.getwd<br>
<br>
Dir.mkdir( &quot;move_dir&quot; )<br>
Dir.chdir( move_dir )<br>
path2 =3D Dir.getwd<br>
Dir.chdir( path1 )<br>
<br>
FileUtils.cp( &quot;#{path1 }/#{filename}&quot;, &quot;#{path2 }/#{filename=
}&quot; )<br>
<br>
This should work cleanly, since all local variables are within double<br>
brackets. =A0It actually does move the file, but still pukes out an<br>
exception:<br>
<br>
Exception `Errno::ENOENT&#39; at<br>
/home/t3905/ruby/ruby-1.8.7-p22/lib/ruby/site_ruby/1.8/fileutils.rb:1420<br=
>
- No such file or directory -<br>
/home/t3905/test/ruby_move/move_test/just_a_file<br>
<br>
So what am I doing wrong?? =A0I completely fail to understand the problem<b=
r>
here.<br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
--<br>
Posted via <a href=3D"http://www.ruby-forum.com/" target=3D"_blank">http://=
www.ruby-forum.com/</a>.<br>
<br>
</div></div></blockquote></div><br></div>

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