回圈段落，按Where-Object條件過濾

我正在嘗試通過防火墻規則 (100 ) 的 .txt 轉儲進行決議。我想在每個規則中搜索特定引數（例如設定 ips-sensor）。如果該規則包含引數，我希望腳本列印“找到的值”。如果沒有，我希望腳本列印“未找到值”。我將每個規則視為一個段落，并在“下一個”上使用了分隔符。我無法讓 foreach 回圈作業。這是我所擁有的：

$paragraphs = Get-Content C:\firewall_rules.txt -Delimiter "next"
#$line = $paragraphs.Split([string[]]"`r`n", [StringSplitOptions]::None)
$exists = $paragraphs | Where-Object { $_ -like '*set ips-sensor*' }  
$noexists = $paragraphs | Where-Object {$_ -notlike '*set ips-sensor*'}
$result = foreach ($line in $paragraphs) {$line.Split([string[]]"`r`n", [StringSplitOptions]::None)}


foreach ($result in $paragraphs)
{
    if (?)
    {
    Write-Host "value found"
    }

    elseif (?)
    {
    Write-Host "value not found"
    }
}

以下是確切格式的示例：

    edit 168
        set name "Office Stuff"
        set srcintf "Office"
        set dstintf "port11"
        set srcaddr "overthere"
        set internet-service enable
        set action accept
        set schedule "always"
        set logtraffic all
        set fsso disable
        set nat enable
    next
    edit 174
        set name "My Policy"
        set srcintf "Office"
        set dstintf "port1"
        set srcaddr "overthere"
        set dstaddr "all"
        set action accept
        set schedule "always"
        set service "ALL"
        set utm-status enable
        set logtraffic all
        set ips-sensor "default"
   next
    edit 68
        set name "Naughty IPs"
        set srcintf "Office"
        set dstintf "port1"
        set srcaddr "all"
        set dstaddr "faraway"
        set schedule "always"
        set service "ALL"
        set logtraffic all
        set ips-sensor "default"
        set fsso disable

我的預期輸出應該是 -

value not found 
value found 
value found

任何幫助表示贊賞。

uj5u.com熱心網友回復：

好問題，我在代碼上添加了注釋，以便您可以遵循思考程序。

# Define the word we want to match
$find = 'ips-sensor'

# Set Paragraph counter
$z = 1

# $file will be an array with 3 elements / paragraphs given the example we got
foreach($paragraph in $file)
{
    # Set the line counter (this will be reset on each paragraph)
    $i = 0

    # Set a result hashtable and assume we will not find the word we're looking for
    $out = [ordered]@{
        Paragraph = $z
        Status = 'Not Found'
        LineNumber = ''
        Line = ''
    }

    # Split this paragraph on new lines and filter only those elements that are 
    # not empty strings and loop through it
    foreach($line in $paragraph -split '\r?\n' -ne '')
    {
        # Increment the line counter
        $i  

        # Self explanatory
        if($line -match $find)
        {
            $out.Status = 'Found'
            $out.LineNumber = $i
            $out.Line = $line.Trim()

            # Break the inner loop, if we are here we don't need to keep looping
            # over this array
            break
        }
    }
    
    # Cast a pscustomobject which can be easily manipulated and exported
    [pscustomobject]$out

    # Increment Paragraph counter
    $z  
}

結果

Paragraph Status    LineNumber Line                    
--------- ------    ---------- ----                    
        1 Not Found                                    
        2 Found     12         set ips-sensor "default"
        3 Found     10         set ips-sensor "default"

如果您想在轉儲檔案中找到多個單詞，則需要對代碼進行一些修改：

$find = 'ips-sensor', 'naughty' -join '|'
$z = 1

foreach($paragraph in $file)
{
    $i = 0
    $out = [ordered]@{
        Paragraph = $z
        Status = 'Not Found'
        LineNumber = ''
        Line = ''
    }

    foreach($line in $paragraph -split '\r?\n' -ne '')
    {
        $i  

        if($line -match $find)
        {
            $out.Status = 'Found'
            $out.LineNumber = $i
            $out.Line = $line.Trim()

            [pscustomobject]$out
        }
    }

    if($out.Status -eq 'Not Found')
    {
        [pscustomobject]$out
    }

    $z  
}

結果

Paragraph Status    LineNumber Line                    
--------- ------    ---------- ----                    
        1 Not Found                                    
        2 Found     12         set ips-sensor "default"
        3 Found     2          set name "Naughty IPs"  
        3 Found     10         set ips-sensor "default"

uj5u.com熱心網友回復：

由于您已經將文本分成塊，因此可以將它們傳遞給 foreach-object，您只需要測驗是否找到了所需的字串。

Get-Content C:\firewall_rules.txt -Delimiter 'next' | ForEach-Object {
    if($_ -Match 'set ips-sensor'){
        "Value found"
    }
    else{
        "Value not found"
    }
}

這會產生您想要的輸出。

Value not found
Value found
Value found

標籤：电源外壳

上一篇：PowerShell中的轉義反引號“`”和反斜杠“\”有什么區別？

下一篇：powershellcatch匯出到csv不起作用