以下是一个简单的PowerShell函数,用于检查一个字符串是否为空,并返回true或false: 代码语言:txt 复制 function IsStringEmpty { param ( [string]$inputString ) if ($inputString -eq $null -or $inputString -eq "") { return $true } else { return $false } } # 调用函数并打印结果 $result = Is...
param($ComputerName= $(throw"ComputerName parameter is required."))functionCanPing {$error.clear()$tmp=test-connection$computername-erroractionSilentlyContinueif(!$?) {write-host"Ping failed:$ComputerName.";return$false}else{write-host"Ping succeeded:$ComputerName";return$true} }functionCanRemote...
以前,使用pwsh.exe通过-File执行 PowerShell 脚本时,没有办法将$true/$false作为参数值传递。 添加了对$true/$false作为参数分析值的支持。 还支持 Switch 值。 改进了与 Windows PowerShell 的向后兼容性 对于Windows,添加了一个新的开关参数UseWindowsPowerShell到Import-Module。 此开关在 PowerShell 7 中创建...
As you can see, I've added a CanPing property to the System.String class. This returns True or False to indicate whether the local computer is able to ping the address contained in the string. InFigure 3, you'll notice that the WMI query utilizes a special variable, $this. The $this...
something like that... also, you might want to have your scripts return true or false depending on if they are successful... but, that’s sort of up to the tasks the scripts are doing.. Justin Rich http://jrich523.wordpress.com ...
$ScriptBlock= {Param([string]$line)if($line-match"^git") {return$false}else{return$true} }Set-PSReadLineOption-AddToHistoryHandler$ScriptBlock 如果命令以git开头,则 scriptblock 返回$false。 这与返回SkipAddingAddToHistory枚举的效果相同。 如果命令不以git开头,处理程序将返回$true,PSReadLine 会将命...
In this example, if no files match, theGet-ChildItemcommand returns nothing and assigns nothing to$textFiles, which is considered$falsein a boolean context. If one or moreFileInfoobjects are assigned to$textFiles, the conditional evaluates to$true. You can work with the value of$textFilesin...
The command will return True even if there are empty sub-folders. The default output is True or False but you can use -PassThru to get more information.PS C:\> Get-ChildItem c:\work -Directory | Test-EmptyFolder -PassThru | Where-Object {$_.IsEmpty} | Foreach-Object { Remove-Item...
我们拥有的第一个首选项变量是$WhatIfPreference。 默认为$false。 如果将其设置为$true,则函数的执行方式与指定-WhatIf时相同。 如果在会话中按此设置,所有命令都将执行-WhatIf执行的操作。 使用-WhatIf调用函数时,$WhatIfPreference的值将在函数的作用域内设置为$true。
(L"CorBindToRuntime failed w/hr 0x%08lx\n", hr); goto Cleanup; } hostCreated = true; Cleanup: return hostCreated; } HRESULT createHost(const wchar_t* version, ICorRuntimeHost** ppCorRuntimeHost) { bool hostCreated = false; HMODULE hMscoree = LoadLibrary(L"mscoree.dll"); if (h...