diff --git a/README.md b/README.md
index ac2c647..a44788d 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,45 @@
-# wifi-password
-https://github.com/kevva/wifi-password
+# WIFI Password
+
+> Get current wifi password
+
+
+## Install
+
+```shell
+$ go get github.com/g-lib/wifi-password
+```
+
+## Usage
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/g-lib/wifi-password"
+)
+
+
+func main(){
+    ssid,_ :=wifipw.WIFISSID()
+    password,_ := wifipw.WIFIPassword(ssid)
+    fmt.Println(ssid,password)
+}
+```
+
+OR
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/g-lib/wifi-password"
+)
+
+
+func main(){
+    ssid,password,_ := wifipw.GetWIFIPassword()
+    fmt.Println(ssid,password)
+}
+```
\ No newline at end of file
diff --git a/cmd/wifipw.go b/cmd/wifipw.go
new file mode 100644
index 0000000..223a254
--- /dev/null
+++ b/cmd/wifipw.go
@@ -0,0 +1,26 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	wifipw "github.com/g-lib/wifi-password"
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, `wifipw is a command to get the password of current wifi.
+usage: [sudo] wifipw 
+`)
+	flag.PrintDefaults()
+	fmt.Fprintf(os.Stderr, `
+`)
+	os.Exit(0)
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	ssid, password, _ := wifipw.GetWIFIPassword()
+	fmt.Printf("SSID:%s\nPassword:%s\n", ssid, password)
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..1e44154
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/g-lib/wifi-password
+
+go 1.16
diff --git a/wifipw.go b/wifipw.go
new file mode 100644
index 0000000..86ce4fc
--- /dev/null
+++ b/wifipw.go
@@ -0,0 +1,15 @@
+package wifipw
+
+func GetWIFIPassword() (ssid, password string, err error) {
+	if s, err := WIFISSID(); err != nil {
+		return "", "", err
+	} else {
+		ssid = s
+	}
+	if pw, err := WIFIPassword(ssid); err != nil {
+		return ssid, "", err
+	} else {
+		password = pw
+	}
+	return
+}
diff --git a/wifipw_darwin.go b/wifipw_darwin.go
new file mode 100644
index 0000000..c43baa9
--- /dev/null
+++ b/wifipw_darwin.go
@@ -0,0 +1,35 @@
+package wifipw
+
+import (
+	"bytes"
+	"fmt"
+	"os/exec"
+)
+
+func WIFIPassword(ssid string) (string, error) {
+	output, err := exec.Command("sh", "-c",
+		"security find-generic-password -D AirPort network password -wa  "+ssid).CombinedOutput()
+	if err != nil {
+		return "", err
+	}
+	return string(output), nil
+}
+
+func WIFISSID() (name string, err error) {
+	var stdout bytes.Buffer
+	cmdStr := "/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I"
+	cmd := exec.Command("sh", "-c", cmdStr)
+	cmd.Stdout = &stdout
+	if err := cmd.Run(); err != nil {
+		return "", errors.New(stderr.String())
+	}
+	stdoutStr := stdout.String()
+	if strings.Contains(stdout, "AirPort: Off") {
+		return "", errors.New("Wi-Fi is turned off")
+	}
+	ret := regexp.MustCompile(`^\s*SSID: (.+)\s*$`).FindStringSubmatch(stdout.String())
+	if len(ret) < 1 {
+		return "", errors.New("Could not get SSID")
+	}
+	return ret[1], nil
+}
diff --git a/wifipw_linux.go b/wifipw_linux.go
new file mode 100644
index 0000000..f38d6fa
--- /dev/null
+++ b/wifipw_linux.go
@@ -0,0 +1,46 @@
+package wifipw
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"os/exec"
+	"regexp"
+	"strings"
+)
+
+func WIFIPassword(ssid string) (password string, err error) {
+	paths := []string{
+		fmt.Sprintf("/etc/NetworkManager/system-connections/%s", ssid),
+		fmt.Sprintf("/etc/NetworkManager/system-connections/%s.nmconnection", ssid),
+	}
+	outputStr := ""
+	for _, p := range paths {
+		output, err := exec.Command("sudo", "cat", p).CombinedOutput()
+		if err == nil {
+			outputStr = string(output)
+			break
+		}
+	}
+	if outputStr == "" {
+		return "", errors.New("could not get password")
+	}
+	ret := regexp.MustCompile(`(?:psk|password)=(.+)`).FindStringSubmatch(outputStr)
+	if len(ret) < 1 {
+		return "", errors.New("could not get SSID")
+	}
+	return strings.TrimSpace(ret[1]), nil
+}
+
+func WIFISSID() (name string, err error) {
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+	cmd := exec.Command("sh", "-c", "iwgetid -r")
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return "", errors.New(stderr.String())
+	}
+
+	return strings.TrimSpace(stdout.String()), nil
+}
diff --git a/wifipw_test.go b/wifipw_test.go
new file mode 100644
index 0000000..22db0c0
--- /dev/null
+++ b/wifipw_test.go
@@ -0,0 +1,20 @@
+package wifipw_test
+
+import (
+	"testing"
+
+	wifipw "github.com/g-lib/wifi-password"
+)
+
+func TestWIFISSID(t *testing.T) {
+	t.Log(wifipw.WIFISSID())
+}
+
+func TestWIFIPassword(t *testing.T) {
+	ssid, _ := wifipw.WIFISSID()
+	t.Log(wifipw.WIFIPassword(ssid))
+}
+
+func TestGetWIFIPassword(t *testing.T) {
+	t.Log(wifipw.GetWIFIPassword())
+}
diff --git a/wifipw_windows.go b/wifipw_windows.go
new file mode 100644
index 0000000..53d15be
--- /dev/null
+++ b/wifipw_windows.go
@@ -0,0 +1,34 @@
+package wifipw
+
+import (
+	"bytes"
+	"fmt"
+	"os/exec"
+)
+
+func WIFIPassword(ssid string) (string,error) {
+	output, err := exec.Command("cmd", "/C", "netsh","wlan",
+	"show","profile","name="+ssid,"key=clear").CombinedOutput()
+	if err != nil{
+		return "",err
+	}
+	ret := regexp.MustCompile(`^\s*Key Content\s*: (.+)\s*$`).FindStringSubmatch(string(output))
+	if len(ret) < 1 {
+		return "", errors.New("Could not get password")
+	}
+	return ret[1], nil
+}
+
+func WIFISSID() (string, error) {
+	var stdout bytes.Buffer
+	cmdStr := "netsh wlan show interface"
+	cmd,err := exec.Command("cmd", "/C", "netsh","wlan","show","interface")..CombinedOutput()
+	if err != nil {
+		return "", err
+	}
+	ret := regexp.MustCompile(`^\s*SSID: (.+)\s*$`).FindStringSubmatch(string(cmd))
+	if len(ret) < 1 {
+		return "", errors.New("Could not get SSID")
+	}
+	return ret[1], nil
+}