I need to write a Powershell Cmdlet for Sync as a backup.
I have found a nice Cmdlet at BsonPoSH, but the original Cmdlet makes JUST Sync each other.
Ref from: BSonPoSH » Sync Folder Script. (http://bsonposh.com/archives/231)
ex;
before sync : After sync
$source/1.txt
$source/1.txt, 2.txt
$dest/2.txt $dest/1.txt, 2.txt
$dest/2.txt $dest/1.txt, 2.txt
This Cmdlet is no deletion which I don't want to.
I need just to sync $source to $dest and delete files from $dest.
Then I modified some last lines;
-Cmdlet------------------------------------------------------------------------------------------------------------I need just to sync $source to $dest and delete files from $dest.
Then I modified some last lines;
#Original Cmdlet from BSonPoSH » Sync Folder Script.
#http://bsonposh.com/archives/231
Param($Source,$Destination)
function Get-SYNC {
Param([string]$file)
$mode = [System.IO.FileMode]("open")
$access = [System.IO.FileAccess]("Read")
$md5 = New-Object System.Security.Cryptography.MD5CryptoServiceProvider
$fs = New-Object System.IO.FileStream($file,$mode,$access)
$Hash = $md5.ComputeHash($fs)
$fs.Close()
[string]$Hash = $Hash
Return $Hash
}
function Copy-LatestFile{
Param($File1,$File2,[switch]$whatif)
$File1Date = get-Item $File1 | foreach-Object{$_.LastWriteTimeUTC}
$File2Date = get-Item $File2 | foreach-Object{$_.LastWriteTimeUTC}
if($File1Date -gt $File2Date)
{
Write-Host "$File1 is Newer… Copying…"
if($whatif){Copy-Item -path $File1 -dest $File2 -force -whatif}
else{Copy-Item -path $File1 -dest $File2 -force}
}
else
{
Write-Host "$File2 is Newer… Copying…"
if($whatif){Copy-Item -path $File2 -dest $File1 -force -whatif}
else{Copy-Item -path $File2 -dest $File1 -force}
}
Write-Host
}
if(!(test-Path $Destination))
{
New-Item $Destination -type Directory -force | out-Null
}
# Getting Files/Folders from Source and Destination
$SrcEntries = Get-ChildItem $Source -Recurse
$DesEntries = Get-ChildItem $Destination -Recurse
# Parsing the folders and Files from Collections
$Srcfolders = $SrcEntries | Where-Object{$_.PSIsContainer}
$SrcFiles = $SrcEntries | Where-Object{!$_.PSIsContainer}
$Desfolders = $DesEntries | Where-Object{$_.PSIsContainer}
$DesFiles = $DesEntries | Where-Object{!$_.PSIsContainer}
# Checking for Folders that are in Source, but not in Destination
foreach($folder in $Srcfolders)
{
$SrcFolderPath = $source -replace "\\","\\" -replace "\:","\:"
$DesFolder = $folder.Fullname -replace $SrcFolderPath,$Destination
if($DesFolder -ne ""){
if(!(test-path $DesFolder))
{
Write-Host "Folder $DesFolder Missing. Creating it!"
new-Item $DesFolder -type Directory | out-Null
}
}
}
# Checking for Folders that are in Destinatino, but not in Source
foreach($folder in $Desfolders)
{
$DesFilePath = $Destination -replace "\\","\\" -replace "\:","\:"
$SrcFolder = $folder.Fullname -replace $DesFilePath,$Source
if($srcFolder -ne "")
{
if(!(test-path $SrcFolder))
{
Write-Host "Folder $SrcFolder Missing. Creating it!"
new-Item $SrcFolder -type Directory | out-Null
}
}
}
# Checking for Files that are in the Source, but not in Destination
foreach($entry in $SrcFiles)
{
$SrcFullname = $entry.fullname
$SrcName = $entry.Name
$SrcFilePath = $Source -replace "\\","\\" -replace "\:","\:"
$DesFile = $SrcFullname -replace $SrcFilePath,$Destination
if(test-Path $Desfile)
{
$SrcMD5 = Get-SYNC $SrcFullname
$DesMD5 = Get-SYNC $DesFile
If($srcMD5 -ne $desMD5)
{
Write-Host "The Files MD5′s are Different… Checking Write Dates"
Write-Host $SrcMD5
Write-Host $DesMD5
Copy-LatestFile $SrcFullname $DesFile
}
}
else
{
Write-Host "$Desfile Missing… Copying from $SrcFullname"
copy-Item -path $SrcFullName -dest $DesFile -force
}
}
#Modified to Sync --
#Delete files if that are in the Destination, but not in Source
foreach($entry in $DesFiles)
{
$DesFullname = $entry.fullname
$DesName = $entry.Name
$DesFilePath = $Destination -replace "\\","\\" -replace "\:","\:"
$SrcFile = $DesFullname -replace $DesFilePath,$Source
if($SrcFile -ne "")
{
if(!(test-Path $SrcFile))
{
Write-Host "$DesFullname Missing… Deleting from $SrcFile"
Remove-Item -path $DesFullname -force
}
}
}
# -- Modified to Sync
Write-Host
-Cmdlet------------------------------------------------------------------------------------------------------------Save it a name like Get-Sync.ps1
then you can call this "Function" PowerShell Cmdlet from another scripting batch file.
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