display ip

pkg/utl/common/common.go

@@ -2,6 +2,8 @@ package common
 
 import (
 	"log"
+	"net"
+	"os"
 	"regexp"
 	"strings"
 )
@@ -20,3 +22,20 @@ func ToSnakeCase(str string) string {
 	snake = matchAllCap.ReplaceAllString(snake, "${1}_${2}")
 	return strings.ToLower(snake)
 }
+
+func GetIP() string {
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		os.Stderr.WriteString("Oops: " + err.Error() + "\n")
+		os.Exit(1)
+	}
+
+	for _, a := range addrs {
+		if ipnet, ok := a.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
+			if ipnet.IP.To4() != nil {
+				return ipnet.IP.String()
+			}
+		}
+	}
+	return ""
+}