运行编译的golang程序时如何使用配置文件

I build a go file using go build main.go. But this program is using a ini file, how do I use this file cause when I run ./main, I am getting this error:

2018/09/20 17:37:38 open config/config.ini: no such file or directory
2018/09/20 17:37:38 open config/config.ini: no such file or directory
panic: open config/config.ini: no such file or directory

goroutine 1 [running]:
log.Panic(0xc0000f7e98, 0x1, 0x1)

The code for using this file are:

func GetConfigFile() (*ini.File, error) {
    f, err := ini.Load("config/config.ini")
    if err != nil {
        log.Println(err)
    }
    return f, err
}

It depends on where you run your program from. Read up on the concept of the current working directory, if you run your program from a console, the path is usually displayed at the start of the line. You use the relative path "config/config.ini" in your code which means that if you are currently in the directory /home/user then the file is expected to be at /home/user/config/config.ini.

You may want to either run your code from a different directory or use an absolute path in your code, e.g. /home/user/go/src/myapp/config/config.ini

Use absolute path like this ：

func GetConfigFile() (*ini.File, error) {
    f, err := ini.Load("/var/config/config.ini")
    if err != nil {
        log.Println(err)
    }
    return f, err
}