giv it a version

main.go

@@ -32,6 +32,7 @@ import (
 	"database/sql"
 	"fmt"
 	"log"
+	"os"
 	"sync"
 	"time"
 
@@ -39,6 +40,8 @@ import (
 	flag "github.com/spf13/pflag"
 )
 
+const version = "v0.0.2"
+
 type Tableschema struct {
 	Name string
 }
@@ -60,7 +63,7 @@ func main() {
 	var optPort int
 	var optMaxconnections int
 	var optTimeout int
-	var optIdleTransaction bool
+	var optIdleTransaction, shversion bool
 	var ctx context.Context
 	var cancel context.CancelFunc
 	var conn string
@@ -71,11 +74,17 @@ func main() {
 	flag.StringVarP(&optServer, "server", "s", "localhost", "Server")
 	flag.IntVarP(&optMaxconnections, "client", "c", 500, "Number of concurrent users")
 	flag.IntVarP(&optPort, "port", "P", 5432, "TCP Port")
-	flag.IntVarP(&optTimeout, "timeout", "t", 0, "Wether to stop the clients after N seconds")
+	flag.IntVarP(&optTimeout, "timeout", "t", 0, "Whether to stop the clients after N seconds")
 	flag.BoolVarP(&optIdleTransaction, "idletransaction", "i", false, "Wether to stay in idle in transaction state")
+	flag.BoolVarP(&shversion, "version", "v", false, "show version")
 
 	flag.Parse()
 
+	if shversion {
+		fmt.Printf("pgidler version %s\n", version)
+		os.Exit(0)
+	}
+
 	if optServer != "" {
 		conn = fmt.Sprintf(NetConnection, optUser, optDatabase, optPasswd, optServer, optPort)
 	} else {