go_get_user_home.go

package main

import (
	"fmt"
	"os"
	"os/user"
	"runtime"
)

func userHomeDir() string {
	if runtime.GOOS == "windows" {
		home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
		if home == "" {
			home = os.Getenv("USERPROFILE")
		}
		return home
	} else if runtime.GOOS == "linux" {
		home := os.Getenv("XDG_CONFIG_HOME")
		if home != "" {
			return home
		}
	}
	return os.Getenv("HOME")
}

func main() {
	fmt.Println(userHomeDir())

	usr, err := user.Current()
	if err != nil {
		panic(err)
	}

	fmt.Println("Name : ", usr.Name)
	fmt.Println("User's home directory is : ", usr.HomeDir)
}

shell $HOME is /root
user Name : root
User's home directory is : /root

if u use golang write ~/file, raise panic. how to fix ? first get user home, then write userHomeDir + file.

panic: open ~/test111: no such file or directory


goroutine 1 [running]:
main.check(...)
    /root/github/a.go:12
main.main()
    /root/github/a.go:19 +0xa0
exit status 2