PowerShell:如果找到字符串，则尝试打印文件的路径 [英] PowerShell: trying to print path of file if string found

问题描述

如果找到字符串，我正在尝试打印文件的路径.问题是，如果1个文件的文件夹中不包含字符串，那么我没有任何输出.基本上，我希望查看证书的有效期是否在有效期的30天内.下面是我的代码:

I am trying to print the path of a file if string is found. Problem is if 1 file does not contain the string in a folder then I do not get any output. Basically I am looking to see if a certificate epoch-time is within 30 days of expiration. Below is my code:

$c = Get-Date (Get-Date).ToUniversalTime() -UFormat %s
$epochtimes=[math]::Round($c)
$d = get-childitem C:\scripts\PALO\* -recurse | Select-String -pattern 
"expiry-epoch"
$e=$d -split "epoch"
$certtime=[double] $e[1]
$certexp = $certtime - 2592000

ForEach ($i in $certexp){
If ($certexp -le $epochtime) {
Write-Host $i
}
}

推荐答案

我做出了两个假设，因为您的问题尚不清楚.重要的是，我假设您有一个目录树，其中包含一些文本文件，每个文本文件中都带有一行，如下所示:

I've made a couple of assumptions since it isn't totally clear from your question what is going on. Importantly, I've assumed you have a directory tree containing some text files each with a line in it like this:

expiry-epoch 1526854766.33933

如果是这种情况，则以下内容应显示一些有关文件的有用信息:

If this is the case, then the following should display some useful information about the files:

Get-ChildItem -Path "C:\test" -File -Recurse |
        ForEach-Object {$threshold = [Math]::Round((Get-Date (Get-Date).ToUniversalTime() -UFormat %s)) + 2592000} {
            $certEpochTime = ([double]($_ | Select-String -Pattern "^expiry-epoch (\d+\.\d+)$").Matches.Groups[1].Value)
            $certExpiryTime = (Get-Date "1/1/1970").AddSeconds($certEpochTime)

            New-Object -TypeName PsCustomObject|
                Add-Member -MemberType NoteProperty -Name ExpiresSoon -Value ($certEpochTime -le $threshold)  -PassThru |                
                Add-Member -MemberType NoteProperty -Name DaysUntilExpiry -Value ([Math]::Round(($certExpiryTime - (Get-Date)).TotalDays)) -PassThru |                
                Add-Member -MemberType NoteProperty -Name CertExpiryTime -Value $certExpiryTime  -PassThru |
                Add-Member -MemberType NoteProperty -Name CertEpochTime -Value $certEpochTime -PassThru |
                Add-Member -MemberType NoteProperty -Name FilePath -Value $_.FullName -PassThru
        } | Format-Table -AutoSize

如果您只需要30天之内带有 expiry-epoch 的所有文件的文件名，那么此简化版本将做到这一点:

If all you need is the filename of any files with an expiry-epoch within 30 days, then this simplified version will do that:

Get-ChildItem -Path "C:\test" -File -Recurse |
        ForEach-Object {$threshold = [Math]::Round((Get-Date (Get-Date).ToUniversalTime() -UFormat %s)) + 2592000} {
            $certEpochTime = ([double]($_ | Select-String -Pattern "^expiry-epoch (\d+\.\d+)$").Matches.Groups[1].Value)

            if($certEpochTime -le $threshold)
            {
                $_.FullName
            }
        }

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