directory listing without . and ..

[Rajarshi Chakravarty]

Hi,
How can I get an array of all legitimate sub directories in the current
directory?

path = "D:/Traffic"
Dir.chdir(path)

This gives 2 extra entries "." and ".."
Dir.open(stationDir).entries.reject{|f| File.file?(f)}

Please help

 

[Ryan Davis]

Hi,
How can I get an array of all legitimate sub directories in the = current
directory?
=20
path =3D "D:/Traffic"
Dir.chdir(path)
=20
This gives 2 extra entries "." and ".."
Dir.open(stationDir).entries.reject{|f| File.file?(f)}

In all my years of ruby I don't think I've ever used =
Dir.open(...).entries. I almost _always_ use Dir.glob (aka Dir[...]). I =
also almost always use the block form for chdir.

Dir.chdir("/Users/ryan") do
p Dir[File.join("Work", "*")]
end

Outputs:

["Work/Icon\r", "Work/cvs", "Work/git", "Work/mirrors", "Work/misc", =

"Work/p4", "Work/svn"]

glob "*" outputs all "visible" files (non-dot files) but it can do a =
whole lot more too. ri Dir.glob for more details.

 

[Robert Klemme]

In all my years of ruby I don't think I've ever used Dir.open(...).entrie=

s. I almost _always_ use Dir.glob (aka Dir[...]). I also almost always use =
the block form for chdir.

Dir.chdir("/Users/ryan") do
=A0p Dir[File.join("Work", "*")]
end

And the chdir isn't even needed here as far as I can see. This should
do the job:

dirs =3D Dir[File.join(path, '*')].select {|x| File.directory? x}

Kind regards

robert

--=20
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

 

[Rajarshi Chakravarty]

Thank you, Ryan and Robert

 

[Caleb Clausen]

Hi,
How can I get an array of all legitimate sub directories in the current
directory?

path = "D:/Traffic"
Dir.chdir(path)

This gives 2 extra entries "." and ".."
Dir.open(stationDir).entries.reject{|f| File.file?(f)}

In all my years of ruby I don't think I've ever used Dir.open(...).entries.
I almost _always_ use Dir.glob (aka Dir[...]). I also almost always use the
block form for chdir.

Dir.chdir("/Users/ryan") do
p Dir[File.join("Work", "*")]
end

Outputs:

["Work/Icon\r", "Work/cvs", "Work/git", "Work/mirrors", "Work/misc",
"Work/p4", "Work/svn"]

glob "*" outputs all "visible" files (non-dot files) but it can do a whole
lot more too. ri Dir.glob for more details.

Omitting all hidden entries may not be what OP wants. This skips not
only '.' and '..', but also (eg) '.git'. I find this way more robust:

Dir.entries(whatever)-['.','..']

 

[Ryan Davis]

Omitting all hidden entries may not be what OP wants. This skips not
only '.' and '..', but also (eg) '.git'.

Yes. I said that.

 

[Suraj Kurapati]

dirs = Dir[File.join(path, '*')].select {|x| File.directory? x}

Use the directory matching power of file globbing patterns:

dirs = Dir["#{path}/*/"]

Here, the '/' suffix makes the pattern match directories only!

Also, note that File.join() always uses '/', even on Windows:

http://www.ruby-forum.com/topic/50137

Cheers.

 

[Suraj Kurapati]

dirs = Dir[File.join(path, '*')].select {|x| File.directory? x}

Use the directory matching power of file globbing patterns:

dirs = Dir["#{path}/*/"]

Here, the '/' suffix makes the pattern match directories only!

If you also want to match dot-directories, use more glob power:

dirs = Dir["#{path}/{*,.[^.]*}/"]

This will match both normal directories (*/) and dot directories
(.[^.]*/). But it will fail if you have a directory named '..foo' or
'........bar', for example.

Cheers.