diff --git a/eBook/13.6.md b/eBook/13.6.md
index e4c6e81..93d6a11 100644
--- a/eBook/13.6.md
+++ b/eBook/13.6.md
@@ -52,7 +52,7 @@ The process id is &{2054 0}total 2056
 
 ```go
 // 2nd example: show all processes
-pid, err = os.StartProcess("/bin/ps", []string{"-e", "-opid,ppid,comm"}, procAttr)  
+pid, err = os.StartProcess("/bin/ps", []string{"ps", "-e", "-opid,ppid,comm"}, procAttr)  
 
 if err != nil {
 		fmt.Printf("Error %v starting process!", err)  //