Question

我试图学习权力,并试图作另外的发言:

if ((Get-Process | Select-Object name) -eq "svchost") {
    Write-Host "seen"
    }
    else {
    Write-Host "not seen"
    }

尽管存在幽灵进程,但这一结果却成了“未见的”。如何加以修改以取得正确结果?

Answer 1

你们的建设是完美的,但改变以下条件:

(Get-Process | Select-Object -expand name) -eq "svchost"

Initially you were comparing an object to the "svchost" which will evaluate to false. With the -expandProperty flag, you are getting that property of the object, which is a string and can be properly compared to "svchost".

请注意,在以上所述,你将包含过程名称的阵列与“幽灵”相比较。如阵列包含其他表述,则<代码>-eq为真实情况,在这种情况下,“svchost”

There are other "better" ways to check as well:

if (Get-Process | ?{ $_.Name -eq "svchost"}) {
  Write-Host "seen"
}
else {
  Write-Host "not seen"
}

Answer 2

你可以简单地要求Get-Process在以下几段之后恢复工作:

if (Get-Process -Name svchost -ErrorAction SilentlyContinue) 
{
  Write-Host "seen"
}
else 
{
  Write-Host "not seen"
}

友情链接