diff --git a/common/lib.go b/common/lib.go
index 6a6a2d0..74a0b3c 100644
--- a/common/lib.go
+++ b/common/lib.go
@@ -46,7 +46,7 @@ func Utf8ToGbk(s []byte) ([]byte, error) {
 }
 
 func NewRandStr(length int) string {
-	s:=[]string{
+	s := []string{
 		"a", "b", "c", "d", "e", "f",
 		"g", "h", "i", "j", "k", "l",
 		"m", "n", "o", "p", "q", "r",
@@ -57,20 +57,20 @@ func NewRandStr(length int) string {
 		"Q", "R", "S", "T", "U", "V",
 		"W", "X", "Y", "Z",
 	}
-	str:=""
-	for i:=1;i<=length;i++  {
+	str := ""
+	for i := 1; i <= length; i++ {
 		r := rand.New(rand.NewSource(time.Now().UnixNano()))
-		str+=s[r.Intn(len(s)-1)]
+		str += s[r.Intn(len(s)-1)]
 	}
 	return str
 }
 
-func Substr(s string,start,end int) string {
-	strRune:=[]rune(s)
-	if start==-1 {
+func Substr(s string, start, end int) string {
+	strRune := []rune(s)
+	if start == -1 {
 		return string(strRune[:end])
 	}
-	if end==-1 {
+	if end == -1 {
 		return string(strRune[start:])
 	}
 	return string(strRune[start:end])
@@ -95,17 +95,17 @@ func Exists(path string) bool {
 	return true
 }
 
-func OpenImage(file string)  {
-	if runtime.GOOS=="windows" {
-		cmd:=exec.Command("start",file)
-		_=cmd.Start()
-	}else{
-		if runtime.GOOS=="linux" {
-			cmd:=exec.Command("eog",file)
-			_=cmd.Start()
-		}else{
-			cmd:=exec.Command("open",file)
-			_=cmd.Start()
+func OpenImage(file string) {
+	if runtime.GOOS == "windows" {
+		cmd := exec.Command("cmd", "/k", "start", file)
+		_ = cmd.Start()
+	} else {
+		if runtime.GOOS == "linux" {
+			cmd := exec.Command("eog", file)
+			_ = cmd.Start()
+		} else {
+			cmd := exec.Command("open", file)
+			_ = cmd.Start()
 		}
 	}
-}
\ No newline at end of file
+}