过滤最新的安全事件记录

时间:2013-07-30 16:24:31

标签: powershell

我发现了一些关于如何显示过去14天用户登录的非常好的代码: Powershell Security Log Get-EventLog

$Date = [DateTime]::Now.AddDays(-14)
$Date.tostring("MM-dd-yyyy"), $env:Computername
$eventList = @()
Get-EventLog "Security" -After $Date `
    | Where -FilterScript {$_.EventID -eq 4624 -and $_.ReplacementStrings[4].Length -gt 10 -and $_.ReplacementStrings[5] -notlike "*$"} `
    | foreach-Object {
        $row = "" | Select UserName, LoginTime
        $row.UserName = $_.ReplacementStrings[5]
        $row.LoginTime = $_.TimeGenerated
        $eventList += $row
      }
$eventList

但我的问题是,如何修改此代码以便选择最新的两条记录?

我尝试了以下内容:

Get-EventLog "Security" -After $Date `
| Where -FilterScript {$_.EventID -eq 4624 -and $_.ReplacementStrings[4].Length -gt 10 -and $_.ReplacementStrings[5] -notlike "*$"} `
| {-Newest 2} 

我收到错误:Missing expression after unary operator '-'.

获取最后两次登录的干净方法是什么,即当前登录和在当前用户之前登录的最后一个人?

编辑:问题已解决,这里是完整的代码

$Date = [DateTime]::Now.AddDays(-14)
$Date.tostring("MM-dd-yyyy"), $env:Computername
$eventList = @()
Get-EventLog "Security" -After $Date `
    | Where -FilterScript {$_.EventID -eq 4624 -and $_.ReplacementStrings[4].Length -gt 10 -and $_.ReplacementStrings[5] -notlike "*$"} `
    | Select-Object -First 2 `
    | foreach-Object {
        $row = "" | Select UserName, LoginTime
        $row.UserName = $_.ReplacementStrings[5]
        $row.LoginTime = $_.TimeGenerated
        $eventList += $row
        }
$eventList

1 个答案:

答案 0 :(得分:4)

而不是:

| {-Newest 2} 

试试这个:

| Select-Object -first 2