powershell - 在 PowerShell 中创建带有变量的表

Question

我仍在学习 PowerShell 脚本，我正在编写一个脚本来计算文件服务器的可用空间百分比，并在驱动器剩余可用空间的 10% 或更少时发送电子邮件通知(这种情况会发生大约每月一次，我需要在收到客户的电子邮件之前知道没有更多空间)。截至目前，该脚本运行良好，并设置为每天早上通过 Windows 任务运行。但是我为输出设置的当前格式是手动完成的。我想知道是否有办法从使用 Get-WmiObject 函数收集和计算的信息中传递变量。我试过 Format-Table 并尝试弄乱哈希表，但无济于事。任何想法都会有所帮助。谢谢。

# Set Parameters
$file = "c:\location\Lowdisk.txt"
Clear-Content $file

$emailTO = "Someone@SomeDomain.com"
$emailFrom = "Someone@SomeDomain.com"
$smtpServer = "smtpServer"

$diskspace = "3"
$computers = ("FSCN01","FSCN02","FSCN03","FSCN04")
echo "Server Name       Drive       Drive Size       Free Space       % Free" >> $file
$i = 0

# Get Drive Data
foreach($computer in $computers)
{
$drives = Get-WmiObject -ComputerName $computer Win32_LogicalDisk | Where-Object {$_.DriveType -eq 3}
foreach($drive in $drives)
{
    $ID = $drive.DeviceID
    $size1 = $drive.size / 1GB
    $size = "{0:N1}" -f $size1
    $free1 = $drive.freespace / 1GB
    $free = "{0:N1}" -f $free1
    $a = $free1 / $size1 * 100
    $b = "{0:N1}" -f $a
        # Monitor for drive free space % under 10%
        if ($b -lt 10)
        {
            echo "$computer         $ID          $size         $free         $b" >> $file
            $i++
        }
}
}
# Send notification if script finds more than 0 drives with less than 35% free space 
    if ($i -gt 0) 
   { 
       foreach ($user in $emailTo) 
            { 
        echo "Sending Email Notification to $user" 
        $smtp = New-Object Net.Mail.SmtpClient($smtpServer) 
        $subject = "Server with Low Disk Space" 
        foreach ($line in Get-Content $file) 
                { 
                $body += "$line `n" 
                } 
        Send-MailMessage -to $user -From $emailFrom -Attachments $file -SmtpServer $smtpServer -Subject $Subject -Body $body 
        $body = "" 
                } 
   } 

Answer 1

Format-Table当您在单一类型的对象中拥有所有感兴趣的数据时，效果最佳。我建议为此创建自定义对象，例如:

foreach($computer in $computers)
{
    $drives = Get-WmiObject -ComputerName $computer Win32_LogicalDisk | Where-Object {$_.DriveType -eq 3}
    foreach($drive in $drives)
    {
        $obj = new-object psobject -Property @{
                   ComputerName = $computer
                   Drive = $drive.DeviceID
                   Size  = $drive.size / 1GB
                   Free  = $drive.freespace / 1GB
                   PercentFree = $drive.freespace / $drive.size * 100
               }
        if ($obj.PercentFree -lt 10) {
            $obj | Format-Table ComputerName,Drive,Size,Free,PercentFree
            $i++
        }
    }
}

如果要更改显示格式，则可以在 format-table 命令中执行以下操作:

$obj | Format-Table ComputerName,Drive,@{n='Size';e={'{0:N1}' -f $_.Size}},Free,PercentFree