Get a list of directory names

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    by Chris78 at 2012-10-04 01:46:58

    Hi,

    I'm sure there is a simple solution for this. I have a directory structure that is very deep, and I need a list of all folder names on the first and second levels, but no further.

    I know I can use the following script to go through everything (folders only):

    gci "C:\MyFolder" -recurse | ?{$_.psiscontainer}

    However, this produces a huge, unmanageable list, and also contains information that I don't need, such as LastWriteTime and Length.

    Ideally, I would want the script to look at all folders in "C:\MyFolder" and all folders in "C:\MyFolder\MyNextFolder", "C:\MyFolder\MyNextFolder2", "C:\MyFolder\MyNextFolder3" etc. etc., and return only the names of the folders with no other information.

    I tried the following to just get names:

    gci "C:\MyFolder" -name -recurse | ?{$_.psiscontainer}

    But it just sits there for ages – most likely because of the amount of folders in there.

    Is this possible?

    Thanks,

    Chris

    by MattG at 2012-10-04 03:30:43

    Just call Get-ChildItem on the folders returned but don't call '-recurse'

    Get-ChildItem 'C:\MyFolder'| Where-Object {$_.PSIsContainer} | Get-ChildItem | Where-Object {$_.PSIsContainer}

    by poshoholic at 2012-10-04 07:21:33

    I think what you're actually looking for is this:
    Get-ChildItem C:\MyFolder -Recurse | Where-Object {$_.PSIsContainer} | Select-Object -ExpandProperty FullName
    Or if you're using PowerShell 3, you can do it this way instead:
    Get-ChildItem C:\MyFolder -Recurse -Directory | ForEach-Object FullName
    Here's another PowerShell 3 way of doing it:
    (Get-ChildItem C:\MyFolder -Recurse -Directory).FullName

    by Klaas at 2012-10-05 00:47:51

    Or
    get-childitem -recurse -directory -name

    It's the part of the question to limit the overview to 2 levels that makes it a bit more difficult. I suppose the way to do it is to nest two Get-Childitem cmlets without the -recurse switch like Matt suggested. But then the trick is to get the output format right. When using the pipeline maybe Tee-object might be useful. If not you will probably have to use a Foreach-Object to write both the current folder and the child directories.
    I tried to use get-childitem -recurse -directory -name and filter out anything that contains more than 2 backslashes: -Exclude *`\*´\*`\* but it doesn't work. Maybe a more complex matching would do it.

    by mjolinor at 2012-10-09 07:35:14

    Or this:
    (cmd /c dir c:\MyFolder\ /b /s /a:d) -match '^.+?\\.+?\\?.+\\?' | sort

    by JeffH at 2012-10-09 07:53:36

    This is a v3 command that works.

    dir -Directory | foreach { $_ ; dir $_ -Directory} | select -expand fullname

    by JeffH at 2012-10-09 07:55:33

    The v2 syntax is a little more complicated.

    PS C:\work> dir | where {$_.PSIscontainer} | foreach {$_ ; dir $_ | where {$_.psiscontainer}} | select -expand fullname

    C:\work\test
    C:\work\Test Rig 2
    C:\work\test2
    C:\work\test3
    C:\work\test3\a
    C:\work\test4
    C:\work\test4\a
    C:\work\Ubuntu12

    My 'b' and 'c' folders don't get displayed.

    by netzambo at 2012-10-09 14:52:57

    The following works:

    Get-ChildItem "C:\MyFolder" -Recurse -Directory | Where-Object {$_.FullName.split("\").count -le 4} | ForEach-Object FullName

    Use how many backslash chars are found in the FullName string based on the result of split.
    You said you want maximum of 3 folder ramification "C:\FirstLevel", "C:\FirstLevel\SecondLevel", "c:\Firstlevel\SecondLevel\ThirdLevel"; so you need 3 backslashes and the result of split must be 4 (as in the example above).

    by JeffH at 2012-10-10 06:40:22

    The downside to this is that you end up parsing text. Think about objects in the pipeline which is what my examples are doing.

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