Question

我在向我的代码字符串添加凭证时遇到问题。这样做的目的是从一台计算机上提取多个日志，并按时间顺序打印出日志。由于某种原因，一旦添加-credential，我将永远无法使get-winevent命令正常工作。欢迎任何输入！

    $creds = Get-Credential -Message "Please enter creds"

    $Startdate = Read-Host -Prompt "Input your start date in the format     of  mm/dd/yyyy hh:mm:ss am"


    Try{

    [DateTime]::Parse($Startdate, [System.Globalization.CultureInfo]::GetCultureInfo("en-US"))
    }
    Catch{

    Write-Host "This time format is incorrect."

    }

    $Enddate = Read-Host -Prompt "Input your end date in the format of mm/dd/yyyy hh:mm:ss am"


    Try{

    [DateTime]::Parse($Enddate, [System.Globalization.CultureInfo]::GetCultureInfo("en-US"))
    }
    Catch{

    Write-Host "This time format is incorrect."

    }


    $Logs = @()
    do{
    $input = (Read-Host "Please enter in the name of a log")
    if($input -ne'') {$Logs += $input}
    }
    until($input -eq '')

    $table = foreach ($Log in $Logs)  
    { 

    Get-WinEvent -FilterHashtable @{LogName=$Log;StartTime=$Startdate;EndTime=$Enddate} -Credential $creds

    }  
    $table | sort TimeCreated  | Format-Table TimeCreated, Logname, Source, Message  -wrap

我当前收到的错误。

Get-WinEvent：试图执行未经授权的操作。在第40行：char：5 + Get-WinEvent -FilterHashtable @ {LogName = $ Log; StartTime = $ Startdate ... + ~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + CategoryInfo：未指定：（：）[Get-WinEvent]，UnauthorizedAccessException + FullyQualifiedErrorId：System.UnauthorizedAccessException，Microsoft.PowerShell.Commands.GetWinEventCommand

Answer 1

我认为错误是由于没有为-FilterHashtable和$Startdate提供正确数据类型的$Enddate。您检查用户输入的格式是否有效，但变量本身仍为字符串。 -FilterHashtable要求这些参数为DateTime对象，如下表所示：

Key name        Value data type
--------------- ---------------
LogName         <String[]>     
ProviderName    <String[]>     
Path            <String[]>     
Keywords        <Long[]>       
ID              <Int32[]>      
Level           <Int32[]>      
StartTime       <DateTime>     
EndTime         <DateTime>     
UserID          <SID>          
Data            <String[]>

尝试一下：

$creds = Get-Credential -Message "Please enter creds"

# Create variable for parsed start date
[datetime]$Startdate = Get-Date

do {
    $input = Read-Host -Prompt "Enter your start date. Use format 'mm/dd/yyyy hh:mm:ss am'"
    # Check the user input
    $success = ([DateTime]::TryParse($input, 
                            [System.Globalization.CultureInfo]::GetCultureInfo("en-US"),
                            [System.Globalization.DateTimeStyles]::None,
                            [ref]$Startdate)) 
} while (!$success)

# Create variable for parsed end date
[datetime]$Enddate = Get-Date
do {
    $input = Read-Host -Prompt "Enter your end date. Use format 'mm/dd/yyyy hh:mm:ss am'"
    # Check the user input
    $success = ([DateTime]::TryParse($input, 
                            [System.Globalization.CultureInfo]::GetCultureInfo("en-US"),
                            [System.Globalization.DateTimeStyles]::None,
                            [ref]$Enddate)) 
} while (!$success)

$Logs = @()
while ($true) {
    $logName = Read-Host -Prompt "Please enter in the name of a log"
    if ([string]::IsNullOrEmpty($logName)) { break }
    $Logs += $logName
}

$table = foreach ($Log in $Logs) { 
    # note that we use [DateTime] objects $Startdate and $Enddate
    Get-WinEvent -FilterHashtable @{LogName=$Log;StartTime=$Startdate;EndTime=$Enddate} -Credential $creds
}  
$table | Sort-Object TimeCreated  | Format-Table TimeCreated, Logname, Source, Message -Wrap

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1 个答案: