我建议将其切换为将其捕获为参数而不是parm/variable(即$folder = $args[0]),以便在Control-M作业...
PowerShell 7.0 引進了三元運算子,其行為類似簡化的if-else陳述式。 PowerShell 的三元運算子會根據 C# 三元運算子語法嚴密地進行模型化: <condition> ? <if-true> : <if-false> 條件運算式一律會進行評估,並將結果轉換成布林值,以判斷下一個要評估的分支: ...
三元运算符? <if-true> : <if-false> 在简单条件情况下,可以使用三元运算符来替换if-else语句。 有关详细信息,请参阅about_If。 Null 合并操作符?? 如果null 合并运算符??不为 null,则它返回其左操作数的值。 否则,它将计算右操作数并返回其结果。 如果左操作数的计算结果为非 null,则??运算符不会计...
how can I check if variable is a letter or number? How can I check to see if a specific Windows Feature is installed on 2008 R2? How can I compute the number of fields in a CSV file that does not contain a header ? How can i conver .exe to ps1 for updating some more codes? H...
Remove-Variable num1 PowerShell自动化变量 常用的变量 $pid $home PowerShell环境变量 ls env: # 查看当前环境变量 $env:os # 输出某个键的值 $env:0s="Linux" # 临时赋值变量 设置永久环境变量(.net方式) [environment]::setenvironmentvariable("PATH","D:","User") ...
if ($myVariable) { Write-Host "Variable has a value" } elseif ($myVariable -eq $null) { Write-Host "Variable is null" } Here, if block checks if variable has a truthy value, so it will go to elseif block even if value is 0, $false, an empty String, an empty array, and ...
Administrator$prefix=if(Test-Pathvariable:/PSDebugContext) {'[DBG]: '}else{''}if($principal.IsInRole($adminRole)) {$prefix="[ADMIN]:$prefix"}$body='PS '+$PWD.path$suffix= $(if($NestedPromptLevel-ge1) {'>>'}) +'> '"${prefix}${body}${suffix}"}## Create $PSStyle if ...
$variable = "value" switch ($variable) { "value1", "value2" { # 执行操作1 break } "value3", "value4" { # 执行操作2 break } default { # 默认操作 break } } 在上述示例中,$variable变量的值将与每个case语句中的值进行匹配。如果匹配成功,则执行相应的操作。如果没有匹配到任何值,则执...
else { $item = Get-ItemProperty $sqlpsreg $sqlpsPath = [System.IO.Path]::GetDirectoryName($item.Path) } # Set mandatory variables for the SQL Server provider Set-Variable -scope Global -name SqlServerMaximumChildItems -Value 0 Set-Variable -scope Global -name SqlServerConnectionTimeout -Val...
Set-Variable[-Name] <String[]> [[-Value] <Object>] [-Include <String[]>] [-Exclude <String[]>] [-Description <String>] [-Option <ScopedItemOptions>] [-Force] [-Visibility <SessionStateEntryVisibility>] [-PassThru] [-Scope <String>] [-WhatIf] [-Confirm] [<CommonParameters>] ...