Learn how to set environment variables using PowerShell with this comprehensive guide, including examples and best practices.
$Env:<variable-name> = "<new-value>" 例如,若要建立 Foo 環境變數: powershell 複製 $Env:Foo = 'An example' 因為環境變數一律是字串,因此您可以使用它們,就像包含字元串的任何其他變數一樣。 例如: powershell 複製 "The 'Foo' environment variable is set to: ...
saving-changes-to-environment-variables/about Environment Variables - PowerShell | Microsoft Docs setx | Microsoft Learn On Windows, there are three methods for makinga persistent changetoan environment variable: setting them in your profile, (仅限从powershell中使用) using theSetEnvironmentVariablemetho...
然后我们根据JDK安装位置设置环境变量。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 $java_home=$install_location $classpath="%JAVA_HOME%\lib;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar"$path="%JAVA_HOME%\bin;"+$env:Path[Environment]::SetEnvironmentVariable("JAVA_HOME",$java_...
Set-Variable -name b -value 99 1. 2. 声明只读变量:(参考New-Variable) New-Variable pi -Value 3.14 -Force -Option readonly New-Variable zero -Value 0 -Force -Option constant 1. 2. Option Description "None" NOoption (default) ...
$Env:<variable-name> ="<new-value>" 例如,若要创建Foo环境变量,请运行以下命令: PowerShell $Env:Foo='An example' 由于环境变量始终是字符串,因此你可以像使用任何其他包含字符串的变量一样使用它们。 例如: PowerShell "The 'Foo' environment variable is set to:$Env:Foo"$Env:Foo+='!'$Env:Foo...
Write-Debug : The running command stopped because the preference variable "DebugPreference" or common parameter is set to Stop: Hello, World At line:1 char:1 + Write-Debug -Message "Hello, World" 此示例使用Debug参数和值为$false来禁止显示单个命令的消息。 未显示调试消息,并且不会停止处理。
BUILD_BUILDNUMBER = "Build HelloWorld_0000.00.00.0"'exit1}# Make sure path to source code directory is availableif(-not$Env:BUILD_SOURCESDIRECTORY) {Write-Error("BUILD_SOURCESDIRECTORY environment variable is missing.")exit1}elseif(-not(Test-Path$Env:BUILD_SOURCESDIRECTORY)) {Write-Error"BUILD...
Write-Verbose : The running command stopped because the preference variable "VerbosePreference" or common parameter is set to Stop: Verbose message test. At line:1 char:1 + Write-Verbose -Message "Verbose message test." 這個範例會 使用Verbose 參數搭配 $false 覆寫Stop 值的 ...
Display the value of the COMPUTERNAME environment variable: Get-Childitem env:computername This can be made easier if you first Set-Location (cd) to the Env: Drive cd env: Then to display a variable: Get-ChildItem computername Returning a string value with $env: PowerShell can also address...