从 cmd.exe 设置持久环境变量 [英] Set a persistent environment variable from cmd.exe

问题描述

我必须在不同的 Windows 机器上设置环境变量，但我不想通过进入我的电脑"的属性屏幕来手动更改它们

I have to set environment variables on different windows machines, but I don't want to be bothered changing them manually by getting on the properties screen of "My Computer"

我想使用批处理文件从命令行执行此操作.据我了解，使用 set 只会更改我将在命令窗口中调用的进程的变量.

I want to do it from the command line, with a batch file. As far as I understand, using set will only change the variable for the processes I will call in the command window.

我想确定设置，所以以后运行新进程时，它会使用我设置的那些新设置.有没有办法从命令行做到这一点?

I want to set it definitely, so later, when running a new process, it will use those new settings I have set. Is there a way to do that from the command line ?

推荐答案

使用 SETX 命令(注意x"后缀)来设置在 cmd 窗口关闭后仍然存在的变量.

Use the SETX command (note the 'x' suffix) to set variables that persist after the cmd window has been closed.

例如，设置一个值为bar"的环境变量foo":

For example, to set an env var "foo" with value of "bar":

setx foo bar

虽然值得阅读如果您打印用法(setx/?)时显示的注释"，特别是:

Though it's worth reading the 'notes' that are displayed if you print the usage (setx /?), in particular:

2) 在本地系统上，此工具创建或修改的变量将在未来的命令窗口中可用，但在当前的 CMD.exe 命令窗口中不可用.

2) On a local system, variables created or modified by this tool will be available in future command windows but not in the current CMD.exe command window.

3) 在远程系统上，此工具创建或修改的变量将在下一次登录会话中可用.

3) On a remote system, variables created or modified by this tool will be available at the next logon session.

在 PowerShell 中，[Environment]::SetEnvironmentVariable 命令.

In PowerShell, the [Environment]::SetEnvironmentVariable command.

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