Powershell根据文件名的初始部分移动Excel文件

Question

I have hundreds of excel files like the following in directory called D:\\TestARC_Source

5020190429.dat
5120190429.dat
602019111121.dat
702019050926.dat 
etc.

I need a script to move them to respective folders based on first two characters of file name. Folders are already created on target directory.

D:\TestARC_Destination\file_50
D:\TestARC_Destination\file_51
D:\TestARC_Destination\file_60
D:\TestARC_Destination\file_70

Files should move to respective folders based on first two characters of file name. For example 5020190429.dat moves to 50_file folder.

I am trying to edit below script but it's not working. I have a very little knowledge in PS script and I'll appreciate if you can help me out.

$SourceFolder = "C:\Users\Administrator\Desktop\ARC_Testing\TestARC_Source\"
$targetFolder = "C:\Users\Administrator\Desktop\ARC_Testing\TestARC_Destination\"

# Find all files matching *.sql in the folder specified
Get-ChildItem -Path $SourceFolder -Filter *.dat | ForEach-Object {

    # Combine the source filename and target directory
    # The source filename has all instances of _ replaced with \
    # Cast the resulting string to a FileInfo object to take advantage of extra methods
    [System.IO.FileInfo]$destination = (Join-Path -Path $targetFolder -ChildPath $_.Name.replace("_","\"))

    # Create the directory if it doesn't already exits
    if (!(Test-Path) $destination.Directory.FullName)
    { 
        New-item -Path $destination.Directory.FullName -ItemType Directory 
    }

    # Copy the source to the target directory
    copy-item -Path $_.FullName -Destination $Destination.FullName 
} 

Answer 1

The following should move the files based on your criteria. Please remove the -WhatIf switch if you are satisfied with what will be moved.

$Source = "D:\TestARC_Source"
$Dest = "D:\TestARC_Destination"

$FilesToMove = Get-ChildItem -Path $Source -File -Recurse -Filter "*.dat" -Include "[0-9][0-9]*"

Foreach ($file in $FilesToMove) {
    Move-Item -Path $file -Destination "$Dest\File_$($file.basename.substring(0,2))” -WhatIf
}

Answer 2

An efficient approach would be to group the files by the 1st two digits,
check if the folder exists (and create if necessary) and move the files in one go.

## Q:\Test\2019\05\31\SO_56397901.ps1
$SourceFolder = "C:\Users\Administrator\Desktop\ARC_Testing\TestARC_Source\"
$targetFolder = "C:\Users\Administrator\Desktop\ARC_Testing\TestARC_Destination\"

Get-ChildItem -Path "$SourceFolder[0-9][0-9]*" -Filter *.dat | 
   Group-Object {"file_"+$_.BaseName.Substring(0,2)}| ForEach-Object {
      $TargetDir = Join-Path $targetFolder $_.Name
      if(!(Test-Path $TargetDir)){MD $TargetDir | Out-Null}
      $_.Group.FullName | Move-Item -Destination $TargetDir #-WhatIf
}

Tree after running with your above testdata:

> TREE /f
├───FILE_50
│       5020190429.DAT
│
├───FILE_51
│       5120190429.DAT
│
├───FILE_60
│       602019111121.DAT
│
└───FILE_70
        702019050926.DAT

EDIT: Changing Requirements usually afford a new question, nevertheless the changes are minimal

## Q:\Test\2019\05\31\SO_56397901.ps1
$SourceFolder = "C:\Users\Administrator\Desktop\ARC_Testing\TestARC_Source\"
$targetFolder = "C:\Users\Administrator\Desktop\ARC_Testing\TestARC_Destination\"

Get-ChildItem -Path "$SourceFolder[0-9][0-9]*" -Filter *.dat | 
   Group-Object {$_.BaseName.Substring(0,2)+"_file"}| ForEach-Object {
      $TargetDir = Join-Path $targetFolder $_.Name
      if(Test-Path $TargetDir){
          $_.Group.FullName | Move-Item -Destination $TargetDir #-WhatIf
      } else {
          "{0} doesn't exist, files not moved: {1}" -f $TargetDir,($_.Group.FullName -join ';')
      } 
}