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Need help with a simple Powershell copy script

Posted on 2010-08-18
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Last Modified: 2012-05-10
I am running this below script to incrementally copy files that have changed on a weekly basis.

The problem I am coming across is that all of the files being copied are being placed on the root of the DataNew directory, and are not getting placed in proper subfolders that exist in the Data folder, even though I am using the recurse tag. Is there something that I maybe need to do with paths?

Here is the script:

foreach ($i in Get-ChildItem C:\Data -recurse)
{
    if ($i.LastWriteTime -lt ($(Get-Date).AddDays(-7)))
    {
        Copy-Item $i.FullName C:\DataNew
    }
}

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Thanks

Parts of the script borrowed from Technet.
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Comment
Question by:SchneiderDowns
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6 Comments
 
LVL 4

Expert Comment

by:trythisone
ID: 33471081
Try this:
foreach ($i in Get-ChildItem H:\Tools -recurse)
{
   if ($i.LastWriteTime -lt ($(Get-Date).AddDays(-7)))  
  {
     Copy-Item $i.FullName (join-path -path 'H:\DataNew' -childpath $i.FullName.SubString($pwd.path.length))
  }
}

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0
 
LVL 4

Expert Comment

by:trythisone
ID: 33471090
Sorry had my test directories in there.. try this one instead
foreach ($i in Get-ChildItem C:\Data -recurse)
{
   if ($i.LastWriteTime -lt ($(Get-Date).AddDays(-7)))  
  {
     Copy-Item $i.FullName (join-path -path 'C:\DataNew' -childpath $i.FullName.SubString($pwd.path.length))
  }
}

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0
 
LVL 13

Expert Comment

by:soostibi
ID: 33473186
Try this. This copies file in two circumstances: the file is missing from the target or the lastwritetime is greater than the target.
Get-childItem c:\ee\ -Recurse | ?{$_.lastwritetime -lt ((Get-Date).adddays(-7))} | 
	%{
		$targetfile = $_.fullname -replace "c:\\ee\\", "c:\eenew\"
		if(!(test-path $targetfile))
		{
			$targetpath = (Split-Path -Parent -Path $_.fullname) -replace "c:\\ee\\?", "c:\eenew\"
			if(!(test-path $targetpath)){	
				[void] (New-Item -ItemType directory -Name (split-path $targetpath -leaf) -Path (Split-Path $targetpath -parent))
			}
			$_ | Copy-Item -Destination $targetpath
		}
		elseif($_.lastwritetime -gt (get-item $targetfile).lastwritetime)
		{
			Write-Host "$_ $($_.lastwritetime) -gt $((get-item $targetfile).lastwritetime)"
			Copy-Item -Destination $targetfile -Path $_.fullname
		}
	}

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LVL 13

Accepted Solution

by:
soostibi earned 2000 total points
ID: 33473194
Sorry, this is my test directories, here is the same with your paths.
Get-childItem c:\data\ -Recurse | ?{$_.lastwritetime -lt ((Get-Date).adddays(-7))} | 
	%{
		$targetfile = $_.fullname -replace "c:\\data\\", "c:\datanew\"
		if(!(test-path $targetfile))
		{
			$targetpath = (Split-Path -Parent -Path $_.fullname) -replace "c:\\data\\?", "c:\datanew\"
			if(!(test-path $targetpath)){	
				[void] (New-Item -ItemType directory -Name (split-path $targetpath -leaf) -Path (Split-Path $targetpath -parent))
			}
			$_ | Copy-Item -Destination $targetpath
		}
		elseif($_.lastwritetime -gt (get-item $targetfile).lastwritetime)
		{
			Write-Host "$_ $($_.lastwritetime) -gt $((get-item $targetfile).lastwritetime)"
			Copy-Item -Destination $targetfile -Path $_.fullname
		}
	}

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0
 

Author Closing Comment

by:SchneiderDowns
ID: 33474506
Thanks for the code soostibi, looks like it works good! you wouldn't be able to explain a little how the code works would you?

trythisone, thanks for your code as well, although I was getting a "startIndex cannot be larger than length of string error" when running it.
0
 
LVL 13

Expert Comment

by:soostibi
ID: 33475149
By the end of the first line: I select all the files that are modified earlier than 7 days before.
$targetfile : I calculate the new full path of the file
If there is nothing at $targetfile location I calculate the $targetparent, that is the parent folder of the new file. It may happen, that this has not been created, so I create it with the new-item -itemtype directory expression.
After that I copy the file to the new place.

The elseif part checks if the file has been already copied there but it is different than the currently examined file, then it should also copied.
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