ps_snippet.ps1

# Template
Set-StrictMode -Version Latest
$ErrorActionPreference = "Stop"
$here = Split-Path -Path $MyInvocation.MyCommand.Path -Parent

# ArrayList
$al = New-Object System.Collections.ArrayList

# OrderedDictionary
$od = [ordered]{
  a = 1
  b = 2
  c = 3}

# read xml
$xmlDoc = [xml](Get-Content "foo.xml" -Encoding utf8)

# SMB接続
$securePassword = ConvertTo-SecureString "password" -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential "$computerName\$userName", $securePassword
New-PSDrive -Name foo -PSProvider FileSystem -Root "\\$computerName" -Credential $cred

# ダブルクォーテーションなし、列名なしのcsvに変換
$object | ConvertTo-Csv -NoTypeInformation -Delimiter ',' | Select-Object -Skip 1 | ForEach-Object {$_ -replace '"',''} |Out-File foo.csv -Encoding utf8

# COM経由でExcel操作
$excel = New-Object -ComObject Excel.Application
$excel.Visible = $false
$excel.DisplayAlerts = $false
$book = $excel.Workbooks.Open($filePath)
$sheet = $excel.Worksheets.Item(1)
$text = $sheet.Cells.Item(1,1).Text

# 10進表記のIPアドレスを16進表記に変換する
# 戻り値 : 16新表記ドット区切りなしのIPアドレス文字列
function Get-IPAddressHex {
    [CmdletBinding()]
    param (
        [parameter(Mandatory=$true, ValueFromPipeline=$true)]
        [int]$IP1decimal, # 10進表記IPアドレス第1オクテット
        [parameter(Mandatory=$true, ValueFromPipeline=$true)]
        [int]$IP2decimal, # 10進表記IPアドレス第2オクテット
        [parameter(Mandatory=$true, ValueFromPipeline=$true)]
        [int]$IP3decimal, # 10進表記IPアドレス第3オクテット
        [parameter(Mandatory=$true, ValueFromPipeline=$true)]
        [int]$IP4decimal # 10進表記IPアドレス第4オクテット
    )
    PROCESS {
        $IP1hex = $IP1decimal.ToString("X").PadLeft(2, "0")
        $IP2hex = $IP2decimal.ToString("X").PadLeft(2, "0")
        $IP3hex = $IP3decimal.ToString("X").PadLeft(2, "0")
        $IP4hex = $IP4decimal.ToString("X").PadLeft(2, "0")

        return $IP1hex + $IP2hex + $IP3hex + $IP4hex
    }
}

# cp932文字列から指定バイト分切り出す
# 戻り値 : 指定バイト分切り出したcp932文字列
function Get-SubStringBytes {
    [CmdletBinding()]
    param (
        [parameter(Mandatory=$true, ValueFromPipeline=$true)]
        [string]$text, # 文字列
        [parameter(ValueFromPipeline=$true)]
        [int]$startIndex = 0, # 開始位置
        [parameter(ValueFromPipeline=$true)]
        [int]$length = 0 # 切り出すbyte数
    )
    PROCESS{
        $encoding = [System.Text.Encoding]::GetEncoding("Shift_JIS");
        $encoder = $encoding.GetEncoder();
        [byte[]]$buff = New-Object byte[] $length
        [int]$charsUsed = 0
        [int]$bytesUsed = 0
        [bool]$completed = $FALSE
        $target = $text.ToCharArray();
        $encoder.Convert($target, 0, $target.Length, $buff, 0, $buff.Length, $TRUE, [ref]$charsUsed, [ref]$bytesUsed, [ref]$completed);
        return $encoding.GetString($buff, $startIndex, $length);
    }
}

# サービスの名前、状態、スタートアップの種類、ログオンアカウント
Get-CimInstance -Class Win32_Service -Property name,state,startmode,startname -Filter 'name="serviceName"'

# 共有アクセス許可テスト    
It "fooの共有アクセス許可 Administratorにフルコントロールが許可されている" {
    $share = Get-CimInstance win32_LogicalShareSecuritySetting -Filter "name='foo'"
    $acls = $share.GetSecurityDescriptor().Descriptor.DACL
    $permission = ""
    foreach($acl in $acls) {
        if($acl.Trustee.Name -eq "Administrator") {
            switch($acl.AccessMask) {
                2032127 {$permission = "FullControl"}
                1245631 {$permission = "Change"}
                1179817 {$permission = "Read"}
            }
        }
    }
    $permission | Should -Be "FullControl"
}