使用powershell复制新的和更新的文件
谈到powershell，我是一个完全的新手，但我得到了一个需要改进的脚本，以便我们可以将更新或新文件从一台服务器移动到另一台服务器。我已经设法掌握了当前的脚本，但正在努力找到正确的cmdlet和参数以实现所需的行为 我的脚本成功地检测到更改的文件，并将它们移动到准备传输到另一台服务器的位置，但它没有检测到任何新文件 有谁能给我一些指导，告诉我如何才能做到这两种行为使用powershell复制新的和更新的文件,powershell,delta,Powershell,Delta,谈到powershell，我是一个完全的新手，但我得到了一个需要改进的脚本，以便我们可以将更新或新文件从一台服务器移动到另一台服务器。我已经设法掌握了当前的脚本，但正在努力找到正确的cmdlet和参数以实现所需的行为 我的脚本成功地检测到更改的文件，并将它们移动到准备传输到另一台服务器的位置，但它没有检测到任何新文件 有谁能给我一些指导，告诉我如何才能做到这两种行为 $CurrentLocation = "C:\current" $PreviousLocation = "C:\prev" $De
$CurrentLocation = "C:\current"
$PreviousLocation = "C:\prev"
$DeltaLocation = "C:\delta"
$source = @{}
#
# Get the Current Location file information
#
Get-ChildItem -recurse $CurrentLocation | Foreach-Object {
if ($_.PSIsContainer) { return }
$source.Add($_.FullName.Replace($CurrentLocation, ""), $_.LastWriteTime.ToString())
}
Write-Host "Content of Source"
$source
$changesDelta = @{}
$changesPrevious = @{}
#
# Get the Previous Directory contents and compare the dates against the Current Directory contents
#
Get-ChildItem -recurse $PreviousLocation | Foreach-Object {
if ($_.PSIsContainer) { return }
$File = $_.FullName.Replace($PreviousLocation, "")
if ($source.ContainsKey($File)) {
if ($source.Get_Item($File) -ne $_.LastWriteTime.ToString()) {
$changesDelta.Add($CurrentLocation+$File, $DeltaLocation+$File)
$changesPrevious.Add($CurrentLocation+$File, $PreviousLocation+$File)
}
}
}
Write-Host "Content of changesDelta:"
$changesDelta
Write-Host "Content of changesPrevious:"
$changesPrevious
#
# Copy the files into a temporary directory
#
foreach ($key in $changesDelta.Keys) {
New-Item -ItemType File -Path $changesDelta.Get_Item($key) -Force
Copy-Item $key $changesDelta.Get_Item($key) -Force
}
Write-Host $changesDelta.Count "Files copied to" $DeltaLocation
#
# Copy the files into the Previous Location to match the Current Location
#
foreach ($key in $changesPrevious.Keys) {
Copy-Item $key $changesDelta.Get_Item($key) -Force
}
这里有一个简单的方法来满足您的需求。需要注意的是，我使用的一些构造需要
PSv3.Name.BaseName#requires -Version 3
$CurrentLocation = 'C:\current'
$PreviousLocation = 'C:\prev'
$DeltaLocation = 'C:\delta'
$Current = Get-ChildItem -LiteralPath $CurrentLocation -Recurse -File
$Previous = Get-ChildItem -LiteralPath $PreviousLocation -Recurse -File
ForEach ($File in $Current)
{
If ($File.BaseName -in $Previous.BaseName)
{
If ($File.LastWriteTime -gt ($Previous | Where-Object { $_.BaseName -eq $File.BaseName }).LastWriteTime)
{
Write-Output "File has been updated: $($File.FullName)"
Copy-Item -LiteralPath $File.FullName -Destination $DeltaLocation
}
}
Else
{
Write-Output "New file detected: $($File.FullName)"
Copy-Item -LiteralPath $File.FullName -Destination $DeltaLocation
}
}
Copy-Item -Path "$DeltaLocation\*" -Destination $PreviousLocation -Force
这里有一个简单的方法来满足您的需求。需要注意的是，我使用的一些构造需要
PSv3.Name.BaseName#requires -Version 3
$CurrentLocation = 'C:\current'
$PreviousLocation = 'C:\prev'
$DeltaLocation = 'C:\delta'
$Current = Get-ChildItem -LiteralPath $CurrentLocation -Recurse -File
$Previous = Get-ChildItem -LiteralPath $PreviousLocation -Recurse -File
ForEach ($File in $Current)
{
If ($File.BaseName -in $Previous.BaseName)
{
If ($File.LastWriteTime -gt ($Previous | Where-Object { $_.BaseName -eq $File.BaseName }).LastWriteTime)
{
Write-Output "File has been updated: $($File.FullName)"
Copy-Item -LiteralPath $File.FullName -Destination $DeltaLocation
}
}
Else
{
Write-Output "New file detected: $($File.FullName)"
Copy-Item -LiteralPath $File.FullName -Destination $DeltaLocation
}
}
Copy-Item -Path "$DeltaLocation\*" -Destination $PreviousLocation -Force
如果这是一个脚本文件，则在调用已知的cmdlet参数时，我会明确表示，例如
Get ChildItem-Path-LiteralPath中，如果（$）ContinueReturnGet ChildItem-Path-LiteralPath中，如果（$）ContinueReturn.Name