如何设置最后的环境变量？在去 [英] How to set environment variables that last ? in go

问题描述

我正在使用 Go OS 设置一些环境变量， p>

I'm trying to set some environment variables on my machine using Go OS

    err := os.Setenv("DBHOST", dbHostLocal)
    if err != nil {
        log.Fatalf("err %v", err)
    }

Go程序可用，但一旦我完成/终止Go进程，变量就不再可用了。我想知道是否可以永久设置这些变量。原因是我正在寻找用于本地和开发环境的配置文件（db name etc）创建一个安装文件，以便我可以在没有任何安装的情况下进行切换，只需一次就可以运行setup.go 。

It seems the variable is available to the Go program but once I quite / terminate the Go process the variable is no longer available. I'm wondering if it's possible to set these variables permanently. The reason is that i was looking to create a "setup" file with config files ( db name etc ) for the local and dev environment so that I could switch between without any setup at all... just one time go run setup.go.

推荐答案

短：这是不可能的。您无法更改父进程的环境。你只能改变自己，把它传给你的孩子。

Short: It is not possible. You can't change the environment of your parent process. You can only change your own and pass it to your children.

你应该做的是维护配置文件。
有很多go config libs在那里：ini，yaml等。

What you should do is maintain a config file. There are plenty of go config libs out there: ini, yaml, etc.

如果您的程序更改配置，每次更改后将其保存到磁盘，或一段时间或进程退出时。

If your program changes the config, save it to disk after each change or one in a while or when the process exits.

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