Powershell Try Catch用于在复制期间检测usb枚举

Question

camelCase

在这里，我能够捕获异常并显示＆＃34;未找到驱动器＆＃34;

但我的问题是，一旦驱动器目的地可用，我希望副本继续。有可能吗？

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Answer 1

这样的事可以帮助你：

$VerbosePreference = 'Continue'

$RetryCount = 0; $MaxTries = 5; $Completed = $false

$Source = 'C:\Users\...\Desktop\1gb'
$Destination = 'F:\'

while (-not $Completed) {
    Try {
        Copy-Item -LiteralPath $Source -Destination $Destination -Recurse -Force -ErrorAction Stop
        $Completed = $true
    }
    Catch {
        if ($RetryCount -ge $MaxTries) {
            Write-Verbose 'Drive not found'
            throw "Drive not found Source '$($Source)' > '$($Destination)': $($Global:Error[0].Exception.Message)"
        } 
        else {
            Write-Verbose "Drive not found, retrying in 5 seconds."
            Start-Sleep -Seconds 5
            $RetryCount++
        }
    }
}

基本上它每5秒重试一次，如果它第6次失败，它将抛出错误并停止所有动作。您可以将其修改为分钟，小时......以满足您的需求。