diff --git a/lib/mmlp/parse.go b/lib/mmlp/parse.go
index c914d5f8..b5bc8552 100644
--- a/lib/mmlp/parse.go
+++ b/lib/mmlp/parse.go
@@ -432,13 +432,13 @@ func RunShellCommand(mml *MmlCommand, omcMmlVar *MmlVar, outputJson *dborm.MmlOu
 	var command string
 	for _, Param := range mml.Params {
 		switch Param.Name {
-		case "netype":
+		case "cmd":
 			command = Param.Value
 		default:
 		}
 	}
-	cmd := exec.Command("sh", "-c", command)
-	out, err := cmd.Output()
+	cmd := exec.Command("/bin/bash", "-c", command)
+	out, err := cmd.CombinedOutput()
 	log.Tracef("Exec output: %v", string(out))
 	if err != nil {
 		log.Error("exe cmd error: ", err)