amended check_redirect

yeeshell.c

@@ -204,13 +204,13 @@ int execute(char *cmdline, char **args)
 			{
 				fd = open(redirect_filename, O_CREAT | O_WRONLY | O_TRUNC, S_IRUSR | S_IWUSR | S_IXUSR);
 				close(1);
-				dup2(1, fd);
+				dup(fd);
 			}
 			else if (redirect_flag == 2)
 			{
 				fd = open(redirect_filename, O_RDONLY, S_IRUSR);
 				close(0);
-				dup2(0, fd);
+				dup(fd);
 			}
 
 			/* The child process inherits the parent's signal mask and will inherit it after exec,