What are the Obsolete and Modern Methods for Getting a User's Home Directory in Go?

Obsolete and Modern Approaches for Retrieving the User's Home Directory

The current recommended method for obtaining the running user's home directory is to use the UserHomeDir function introduced in Go 1.12. This function will work on all platforms that Go supports.

package main

import (
    "fmt"
    "log"
    "os"
)

func main() {
    dirname, err := os.UserHomeDir()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(dirname)
}

Prior to Go 1.12, the os.Getenv("HOME") method could be used. However, this approach is now considered obsolete and should be avoided. Additionally, it is not guaranteed to work on non-Linux platforms, such as Windows.

Another older approach that was deprecated in Go 1.13 is to use the user.Current() function from the user package.

package main

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

func main() {
    usr, err := user.Current()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(usr.HomeDir)
}

Always prefer using the recommended os.UserHomeDir() function for the most reliable and cross-platform approach to retrieving the user's home directory.

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