Question

我正在尝试编写代码以检查配置文件（如果它包含某些UserParameters），以及是否不将其添加到文件中。我觉得我的代码在很多层面上都是绝对错误的，而且我没有想法。

$s1 = 'a'
$s2 = 'b'
$s3 = 'c'
$s4 = 'd'
$s5 = 'e'
$s6 = 'f'
$s7 = 'g'
$s8 = 'h'
$scripts = $s1, $s2, $s3, $s4, $s5, $s6, $s7, $s8

foreach ($element in $scripts) {
    if ("(UserParameter=$element)" -notmatch $config) {
        Get-Content $File $element -replace '^(UserParameter=)',"`$1$($element)"
    } else {
        Add-Content $File "UserParameter=$element"
    }

我不完全知道如何确保会有这样的事情：

UserParameter=a
UserParameter=b
...
UserParameter=h

编辑：

我当前拥有的配置 https://pastebin.com/BdwH53QZ

我想获得的配置状态： https://pastebin.com/6f0xe2k3

在文件末尾添加了新行。

UserParameter=windowsdisk.discovery, powershell -NoProfile -File discover_PerfMon_PhysicalDisk.ps1
UserParameter=vfs.fs.partition.label[*], powershell -NoProfile -File get_volume_label.ps1 $1
UserParameter=psh.rds.empty.session.detect, powershell -NoProfile -File rds_empty_session_detect.ps1
UserParameter=psh.pki.rootca.thumb.count[*], powershell -NoProfile -Command "(Get-ChildItem Cert:\LocalMachine\Root\$1 -ErrorAction SilentlyContinue).Count"

Answer 1

由于您的UserParameters非常复杂，并且将它们与文件进行比较会失败，即使在空格上有细微的差异，我也怀疑您的方法有效。

如果给定的UserParameter已经存在，我建议找到一些正则表达式进行过滤。

如果选择PowerShell，则不可避免地需要学习此脚本语言或将其委派给其他人。

您可以尝试以下方法：

## Q:\Test\2019\04\24\SO_55827904.ps1
$UserParameters = @"
UserParameter=windowsdisk.discovery, powershell -NoProfile -File discover_PerfMon_PhysicalDisk.ps1
UserParameter=vfs.fs.partition.label[*], powershell -NoProfile -File get_volume_label.ps1 $1
UserParameter=psh.rds.empty.session.detect, powershell -NoProfile -File rds_empty_session_detect.ps1
UserParameter=psh.pki.rootca.thumb.count[*], powershell -NoProfile -Command "(Get-ChildItem Cert:\LocalMachine\Root\$1 -ErrorAction SilentlyContinue).Count"
"@ -split '\r?\n'

ForEach ($File in (Get-ChildItem -Path X:\path -Filter *zabbix_agent.conf)){
    $FileContent = Get-Content $File -raw
    ForEach ($UserParam in $UserParameters){
        if($FileContent -notmatch [RegEx]::Escape($UserParam)){
           Add-Content -Path $File.FullName -Value $UserParam
        }
    }
}

您必须使-Path和-Filter适应您的环境。

Answer 2

另一种方法可能是：

$file = 'D:\zabbix_agent.conf'

# create an array of userparameters to add if not already present
$userParams = 'UserParameter=windowsdisk.discovery, powershell -NoProfile -File discover_PerfMon_PhysicalDisk.ps1',
              'UserParameter=vfs.fs.partition.label[*], powershell -NoProfile -File get_volume_label.ps1 $1',
              'UserParameter=vfs.fs.partition.label[*], powershell -NoProfile -File get_volume_label.ps1 $2',
              'UserParameter=psh.rds.empty.session.detect, powershell -NoProfile -File rds_empty_session_detect.ps1',
              'UserParameter=psh.pki.rootca.thumb.count[*], powershell -NoProfile -Command "(Get-ChildItem Cert:\LocalMachine\Root\$1 -ErrorAction SilentlyContinue).Count"'

# read the file as a string array
$content = Get-Content -Path $file
# remember the original lines count so we know if parameters were added or not
$originalCount = $content.Count

# get a sub-array of all lines from $content that start with 'UserParameter='
$currentParams = @($content | Where-Object { $_ -match '^UserParameter=' })
if ($currentParams.Count -eq 0) {
    # if the config file did not have any 'UserParameter=' lines, we add the whole $userParams array to the content
    $content += $userParams
}
else {
    # there were 'UserParameter=' lines found, so filter out all required parameters that need to be added
    $addThese = @($userParams | Where-Object { $currentParams -notcontains $_ })
    if ($addThese.Count) { $content += $addThese }
}

if ($originalCount -ne $content.Count) {
    Write-Host "Writing new Zabbix configuration file." -ForegroundColor Yellow
    Set-Content -Path $file -Value $content
}
else {
    Write-Host "File '$file' already contained the required user parameters." -ForegroundColor Green
}

Answer 3

这是我的版本。 [咧嘴]我从您的样本中制作了两个文件。一条没有UserParameter行，一条带有两条这样的行。下面的代码检查是否有任何此类行...如果没有，则将所有行都添加。如果是，则会添加缺少的所需值列表中的值。

$FileList = Get-ChildItem -Path 'C:\Temp\JDHellequin_-_sample - *.txt'
$Prefix = 'UserParameter='

$NeededParamList = @(
    'windowsdisk.discovery, powershell -NoProfile -File discover_PerfMon_PhysicalDisk.ps1'
    'vfs.fs.partition.label[*], powershell -NoProfile -File get_volume_label.ps1 $1'
    'psh.rds.empty.session.detect, powershell -NoProfile -File rds_empty_session_detect.ps1'
    'psh.pki.rootca.thumb.count[*], powershell -NoProfile -Command "(Get-ChildItem Cert:\LocalMachine\Root\$1 -ErrorAction SilentlyContinue).Count"'
    )

foreach ($FL_Item in $FileList)
    {
    $TargetLines = @(Get-Content -LiteralPath $FL_Item.FullName).
        Where({
            $_.StartsWith($Prefix)
            }).
        ForEach({
            $_.Split('=')[1]
            })


    foreach ($NPL_Item in $NeededParamList)
        {
        $NewLine = '{0}{1}' -f $Prefix, $NPL_Item
        if ([string]::IsNullOrEmpty($TargetLines))
            {
            Add-Content -LiteralPath $FL_Item.FullName -Value $NewLine
            }
            else
            {
            if ($NPL_Item -notin $TargetLines)
                {
                Add-Content -LiteralPath $FL_Item.FullName -Value $NewLine
                }
            }
        }
    }

在每种情况下，添加到的文件都有四行与$NeededParamList集合中的必需项目匹配。

替换配置文件中的变量

3 个答案: