reimpl version

Author: samitani

cmd/go-sysbench/main.go

@@ -20,6 +20,7 @@ package main
 import (
 	"log"
 	"os"
+	"fmt"
 
 	"github.com/jessevdk/go-flags"
 
@@ -29,6 +30,7 @@ import (
 
 type (
 	CmdOpts struct {
+		Version bool `long:"version" description:"show version"`
 		benchmark.BenchmarkOpts
 		runner.RunnerOpts
 	}
@@ -44,7 +46,11 @@ func main() {
 		log.Fatal(err)
 	}
 
-	if len(args) > 2 {
+	if opts.Version {
+		fmt.Println("go-sysbench 0.1.0")
+	}
+
+	if len(args) != 2 {
 		parser.WriteHelp(os.Stdout)
 		os.Exit(0)
 	}