如何使用7zip

Question

我有一个大的脚本，做所有的工作，恢复，备份和删除现有的。然而，在这样做之前，我从主脚本调用我的备份脚本，该脚本在删除现有站点并将其恢复到以前的状态之前备份现有站点。但是，当我的备份脚本(我从主脚本调用)在文件被删除的同时运行时，我希望等待一段时间，以便备份在当前文件被删除之前首先完成，然后恢复以前的备份并将文件粘贴到各自的文件夹中。

这是我的主脚本，它是

$content =获取子项'C:\Backups\my_site‘

$sortedContent = $content |  Sort-Object LastWriteTime -Descending  

write-host“这是my_site的所有备份的列表:”

$count =1 foreach ($sortedContent中的$item){

Write-Host ("{0}: {1}" -f $count, $item.Name)
$count++ 
}



# 2.Take input from user
$itemNumber = Read-Host "Please select which backup you want to restore"
$confirmation = Read-Host "Are you Sure You Want To Proceed:"
# 2.Take input from user

if ($confirmation -eq 'y') {

# 3. BACKUP script

./ BACKUP _mysite.ps1 # 3.备份

# 4. DELETE CONTENTS OF my_site


get-childitem "C:\inetpub\wwwroot\my_site\" -recurse | % {

remove-item $_.FullName -recurse -force

}

}


# 4. DELETE CONTENTS OF APP

# 5. COPY CONTENTS OF ZIP INTO APP DIRECTORY
$itemNumber = $itemNumber -1
if($sortedContent[$itemNumber].PSIsContainer -eq $true)
{ 
$src = $sortedContent[$itemNumber].FullName + "\"


$WebzipPath = $src + "my_site.zip"


$Date = Get-Date
$folder_date = $Date.ToString("yyyy-MM-dd_HHmm")
$tempPath = 'C:\_Temp\Restore\my_site_restore_' + $folder_date
if (!(Test-Path -path $tempPath)) 
{
    New-Item $tempPath -type directory
}   


./Library/unzip.ps1 $WebzipPath $tempPath



$tempPathWeb = $tempPath + "/my_site/*" 

Copy-Item  -Path $tempPat -Destination 'C:\inetpub\wwwroot\my_site\' -Recurse -
force

我使用的zip脚本是这样的

$path = $args[0]
$files = $input

if (-not $path.EndsWith('.zip')) {$path += '.zip'} 

if (-not (test-path $path)) { 
set-content $path ("PK" + [char]5 + [char]6 + ("$([char]0)" * 18)) 
} 

$ZipFile = (new-object -com shell.application).NameSpace($path) 
$files | foreach {$zipfile.CopyHere($_.fullname)} 

有人建议我不能使用这个zip脚本，因为它是异步的，这个人建议我使用7zip来做所有的压缩，但我不知道怎么做，这是我的备份脚本，然后调用上面的zip脚本来完成所有的压缩。

$Service_folder_name = 'C:\Services\'
$Pics_folder_name = 'C:\Pics\'


$Date = Get-Date

$folder_date = $Date.ToString("yyyy-MM-dd_HHmm")

$backup_folder_name = 'c:\_Backups\my_site\' + $folder_date

if (!(Test-Path -path $backup_folder_name)) {

New-Item $backup_folder_name -type directory
}

if ((Test-Path -path $Pics_folder_name)) {
gi $pics_folder_name | .\Library\out-zip.ps1 $backup_folder_name\pics.zip $_
}

if ((Test-Path -path $Service_folder_name)) {
gi $Service_folder_name | .\Library\out-zip.ps1 $backup_folder_name\Services.zip $_
}

Answer 1

我之前写了一个使用7zip的函数，这个函数使用的是独立的7za.exe。它应该会让你对如何同步使用它有一个很好的想法。

Function out-7zip
{
<#
.SYNOPSIS
Will add files to a zip package

.DESCRIPTION
Uses the 7za.exe standalone component to add files to an archive, if the archive specified in the path doesn't exist it will create a new archive automatically.

.EXAMPLE
ls c:\logs -recurse | Where {(!($_.PSiscontainer))} | out-7zip -path c:\logs.zip

-----------------

Adds all files from the c:\logs directory to the c:\logs.zip archive

.EXAMPLE
get-item c:\logs | out-7zip -path c:\newzipfile.zip

----------------

Takes the c:\logs directory and adds it, and it's contents to a new archive called newzipfile.zip

.NOTES
Writen by Jason Morgan
Last Modified 8/5/2013


#>
[cmdletbinding()]
Param
(
    # Accepts a file system object that will get added to the zip file
    [Parameter( 
    ValueFromPipeline=$True, 
    ValueFromPipelineByPropertyName=$True,
    HelpMessage='This Parameter requires a filesystem object as input')]
    [Parameter(ParameterSetName='Default')]
    [PSObject]$inputobject,
    # Set the path to the new or existing zip archive
    [Parameter(
    Mandatory=$true,
    HelpMessage='Path to the zip file, can be a new zip file or an existing archive')]
    [ValidateScript({$_.endswith('.zip')})]
    [Parameter(ParameterSetName='Default')]
    [string]$path,
    #Path to 7za.exe file
    [Parameter(
    Mandatory=$false)]
    [ValidateScript({$_.endswith('7za.exe')})]
    [Parameter(ParameterSetName='Default')]
    [String]$ZipApp = 'C:\ISDps\Configs\7za.exe'
)
Process
{
    $inputobject | foreach {
        Try
            {
                [Array]$arguments = "a", "-tzip", $path, $_.fullname
                Start-Process -FilePath $ZipApp -ArgumentList $arguments -Wait | Out-Null
            }
        Catch
            {
                Write-Error "Unable to add $($_.fullname) to $path"
            }
    }
}
}