In this tutorial, I will explain how tocreate a file using PowerShell if it doesn’t already exist. As a PowerShell user, I’ve encountered situations where I needed to ensure a file was created only if it wasn’t present. I’ll walk you through different methods to achieve this with ...
if語句不僅允許您在語句為$true時指定動作,也允許您在語句為$false時指定動作。 這就是else語句發揮作用的地方。 否則 使用時,else語句一律是if語句的最後一個部分。 PowerShell if(Test-Path-Path$Path-PathTypeLeaf ) {Move-Item-Path$Path-Destination$archivePath}else{Write-Warning"$pathdoesn't exist or...
if语句 下面是if语句的基本示例: PowerShell $condition=$trueif($condition) {Write-Output"The condition was true"} if语句执行的第一步是计算括号中的表达式。 如果计算结果为$true,则执行大括号中的scriptblock。 如果值为$false,则会跳过该脚本块。
Write-Host"Module '$mod' is already installed"}else{# Module does not exist,install it Write-Host"Installing '$mod'"Install-Module $mod}}}
To create a directory if it does not exist, this is a very robust example of how you might want to handle it. Adapt to suit your needs. This code was put in the file "NewDirDemo.ps1" that you see me using below. [CmdletBinding()] ...
program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. At line:1 char:1 + Get-MrPSVersion + CategoryInfo : ObjectNotFound: (Get-MrPSVersion:String) [], CommandNotFou ndException + FullyQualifiedErrorId : CommandNotFound...
# Make sure path to source code directory is availableif(-not$Env:BUILD_SOURCESDIRECTORY) {Write-Error("BUILD_SOURCESDIRECTORY environment variable is missing.")exit1}elseif(-not(Test-Path$Env:BUILD_SOURCESDIRECTORY)) {Write-Error"BUILD_SOURCESDIRECTORY does not exist:$Env:BUILD_SOURCESDIRECTORY...
Check if a process is running check if a process or service is hanging/not responding? Check if a text file is blank in powershell check if computer exist in ou Check if drive exists, If not map Check if Email address exists in Office 365 and if exists, Create a Unique Email address...
The EWSFindCountLimit parameter specifies the maximum result size of FindItem or FindFolder calls that can exist in memory on the Client Access server at the same time for this user in this current process. If an attempt is made to find more items or folders than your policy limit allows,...
# Make sure path to source code directory is availableif(-not$Env:BUILD_SOURCESDIRECTORY) {Write-Error("BUILD_SOURCESDIRECTORY environment variable is missing.")exit1}elseif(-not(Test-Path$Env:BUILD_SOURCESDIRECTORY)) {Write-Error"BUILD_SOURCESDIRECTORY does not exist:$Env:BUILD_SOURCESDIRECTORY...