$env:中的环境变量只是电脑环境变量的一个副本,除了用.NET方法更新环境变量,其他的更改在下一次重新打开时,会恢复如初。 通过$env:提示powershell忽略基本的variable:驱动器,先去环境变量env:驱动器中寻找变量。 通过“ls env:”可以查询所有的环境变量,通过“$env:name”就可以访问指定name的环境变量了。 PS C:\...
为了管理变量,powershell提供了五个专门管理变量的命令Clear-Variable,Get-Variable,New-Variable,Remove-Variable,Set-Variable。因为虚拟驱动器variable:的存在,clear,remove,set打头的命令可以被代替。但是Get-Variable,New-Variable。却非常有用new-variable可以在定义变量时,指定变量的一些其它属性,比如访问权限。同样Get...
del variable:a del Variable:pi -Force del Variable:zero -Force #constant 不可删除 Remove-Variable c 1. 2. 3. 4. 系统变量、自动变量: $HOME Get-Help about_Automatic_variables 1. 2. 3. 查看环境变量: $env:USERNAME ls env:USER* ls env: 1. 2. 3. 添加、更改、删除 当前环境变量(当前...
function envAdder { <# .synopsis add a value to a specified environment variable often, the most useful variable is `Path`; and the most often operation is add value to the Path ; if the target value is no exist yet, then the function will try to create the corresponding variable for ...
可以将函数添加到脚本模块中,将该模块放在$env:PSModulePath中定义的位置,然后调用这些函数,而无需查找保存函数的位置。 使用PowerShellGet模块,可以轻松地在 NuGet 存储库中共享 PowerShell 模块。PowerShellGet随 PowerShell 5.0 及更高版本一起提供。 也可为 PowerShell 3.0 及更高版本单独下载。
get help for a script that isn't located in a path that's listed in the `$env:Path` environment variable, type the script's path and file name. If you enter the exact name of a help article, `Get-Help` displays the article contents. If you enter a word or word pattern that ...
$Env:<variable-name> For example, to display the value of theWINDIRenvironment variable: PowerShell $Env:windir Output C:\Windows In this syntax, the dollar sign ($) indicates a variable, and the drive name (Env:) indicates an environment variable followed by the variable name (windir). ...
As a security feature, PowerShell doesn't run executable commands, including PowerShell scripts and native commands, unless the command is located in a path listed in the $env:Path environment variable. To run an executable file that's in the current directory, specify the full path or use ...
Get-ChildItem Env: Or at least it didn’t show up until we restarted PowerShell. (Or started up a new instance of PowerShell.) However, wecouldretrieve the value of the new variable at any time by using this command: [Environment]::GetEnvironmentVariable("TestVariable","User") ...
Get-Service-Namew32time |Select-Object-Property* Output Name : w32time RequiredServices : {} CanPauseAndContinue : False CanShutdown : True CanStop : True DisplayName : Windows Time DependentServices : {} MachineName : . ServiceName : w32time ServicesDependedOn : {} ServiceHandle : Status ...