bin/cuttab in wukong-1.4.0 vs bin/cuttab in wukong-1.4.1

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
 
 fields=${1-"1-"}
 shift
-cut  -d'	' -f"$fields" "$@"
+exec cut  -d'	' -f"$fields" "$@"