Powershell move folders content to another folders-CodePudding

I started learing powershell two weeks ago. I have the following folders structure

C:\not prepared\Not ready
    ABCD_EFGH-whatever\work
    IJK-whatever\work
    LMN-whatever\work
    OPRSTU_WXYZ-whatever\work

C:\Already ready
    ABCD_EFGH
    IJK
    LMN
    OPRWXY

The script will run from C:\Already ready. I want to move each work folder from "Not ready\*\" to "Already ready\*" to get

C:\not prepared\Not ready
    ABCD_EFGH-whatever
    IJK-whatever
    LMN-whatever
    OPRSTU_WXYZ-whatever

C:\Already ready
    ABCD_EFGH\work
    IJK\work
    LMN\work
    OPRWXY\work

I don't want to specify exact folder names, as those may change. Only first 3 characters from Not ready and Already ready subfolders matches. I guess I should read all subfolders' names from both locations, then put them in a array and compare names one by one. What's more, not all folders may always be present in C:\not prepared\Not ready.

Is there are smarter way to do it? Please give me a hint or example.

CodePudding user response：

Get-Item 'C:\not prepared\Not ready\*\work' | ForEach-Object {

  # Derive the destination dir's name from the parent directory name,
  # by taking the string before "-". To also split by "_", use:
  #    $destDir = ($_.Parent.Name -split '[-_]')[0] 
  # To take just the first 3 characters, use:
  #    $destDir = $_.Parent.Name.Substring(0, 3)
  $destDir = ($_.Parent.Name -split '-')[0]

  # Handle the lone exception to the name mapping.
  if ($_.Parent.Name -like 'OPRSTU_WXYZ-*') { $destDir = 'OPRWXY' }

  # Make sure that the destination dir. exists.
  $null = New-Item -ErrorAction Stop -Force -Type Directory $destDir

  # Perform the move.
  $_ | Move-Item -Destination $destDir -WhatIf

  # If desired, remove the parent dir. of the source dir.
  Remove-Item -LiteralPath $_.Parent.FullName -Recurse -Force -WhatIf
}

^{Note: The -WhatIf common parameter in the command above previews the operation. Remove -WhatIf once you're sure the operation will do what you want.}

Note: The solution above assumes two things:

Each source work folder uniquely maps to a destination folder.
If the destination folder happens to exist already, it is assumed not to already have a work subfolder.