Go user包

user的结构：

type User struct {
    Uid      string // user id
    Gid      string // primary group id
    Username string
    Name     string
    HomeDir  string
}

user包中的主要函数：

    type User
        func Current() (*User, error)
        func Lookup(username string) (*User, error)
        func LookupId(uid string) (*User, error)

事例1  windows：

package main

import (
	"fmt"
	"os/user"
)

func main() {
	usr, error := user.Current()
	if error == nil {
		fmt.Println(usr)
	}
}

[ `go run testuser.go` | done: 7.5934343s ]
	&{S-1-5-21-2450167352-2372647358-1749370957-1000 S-1-5-21-2450167352-2372647358-1749370957-513 City-PC\City  C:\Users\City}

事例2 windows：

package main

import (
	"fmt"
	"os/user"
)

func main() {
	usr, error := user.Current()
	if error == nil {
		fmt.Println(usr.Uid)
		fmt.Println(usr.Gid)
		fmt.Println(usr.Username)
		fmt.Println(usr.Name)
		fmt.Println(usr.HomeDir)
		_usr, error1 := user.Lookup(usr.Username)
		if error1 == nil {
			fmt.Println(_usr)
		} else {
			fmt.Println(error1.Error())
		}
	} else {
		fmt.Println(error.Error())
	}
}
[ `go run testuser.go` | done: 14.3608214s ]
	S-1-5-21-2450167352-2372647358-1749370957-1000
	S-1-5-21-2450167352-2372647358-1749370957-513
	City-PC\City
	
	C:\Users\City
	&{S-1-5-21-2450167352-2372647358-1749370957-1000 unknown City-PC\City  Unknown directory}

事例3 windows：

package main

import (
	"fmt"
	"os/user"
)

func main() {
	usr, error := user.Current()
	if error == nil {
		fmt.Println(usr.Uid)
		fmt.Println(usr.Gid)
		fmt.Println(usr.Username)
		fmt.Println(usr.Name)
		fmt.Println(usr.HomeDir)
		_usr, error1 := user.Lookup(usr.Uid)
		if error1 == nil {
			fmt.Println(_usr)
		} else {
			fmt.Println(error1.Error())
		}
	} else {
		fmt.Println(error.Error())
	}
}

[ `go run testuser.go` | done: 7.5694329s ]
	S-1-5-21-2450167352-2372647358-1749370957-1000
	S-1-5-21-2450167352-2372647358-1749370957-513
	City-PC\City
	
	C:\Users\City
	No mapping between account names and security IDs was done.

好像uid查询 在windows上不怎么起作用

包的bug提示：

 Lookup and LookupId functions do not set Gid and HomeDir fields in the User struct returned on windows.

Linux,Fedora19

code:

package main
import(
        "fmt"
        "os/user"
)
func PrintUsr(usr *user.User){
        fmt.Println("------------------------------")
        fmt.Println("Uid: ",usr.Uid)
        fmt.Println("Gid: ",usr.Gid)
        fmt.Println("Username: ",usr.Username)
        fmt.Println("Name: ",usr.Name)
        fmt.Println("HomeDir: ",usr.HomeDir)
}
func main(){
        usr,_ := user.Current()
        PrintUsr(usr)
        user1,_:=user.Lookup(usr.Name)
        PrintUsr(user1)
        user2,_:=user.LookupId(usr.Uid)
        PrintUsr(user2)
}

Result:

[jjy@localhost user]$ go run testuser.go
------------------------------
Uid:  1000
Gid:  1000
Username:  jjy
Name:  jjy
HomeDir:  /home/jjy
------------------------------
Uid:  1000
Gid:  1000
Username:  jjy
Name:  jjy
HomeDir:  /home/jjy
------------------------------
Uid:  1000
Gid:  1000
Username:  jjy
Name:  jjy
HomeDir:  /home/jjy

---