--- libaitio/example/test_exec.c	2013/12/05 12:45:53	1.1.2.1
+++ libaitio/example/test_exec.c	2013/12/05 17:12:16	1.1.2.6
@@ -1,12 +1,49 @@
 #include <stdio.h>
 #include <aitio.h>
+#include <sys/wait.h>
 
 
 int
 main(int argc, char **argv)
 {
+	prog_t *p;
+	int ret = 0;
+
 	if (argc < 2)
 		return 1;
 
-	return 0;
+	p = io_progInit(argv[1], 3, 10);
+	if (!p) {
+		ELIBERR(io);
+		return 2;
+	} else if ((ret = io_progCheck(p))) {
+		printf("0.exited procs=%d\n", ret);
+		goto end;
+	} else {
+		printf("wait for keystroke %p ", p);
+		getchar();
+	}
+
+	ret = io_progCheck(p);
+	if (ret) {
+		printf("1.exited procs=%d\n", ret);
+		goto end;
+	}
+
+	printf("last=%d\n", array_Last(p->prog_fds));
+
+	ret = io_progGrow(p, 8);
+	printf("+grow_progs=%d\n", ret);
+
+	printf("wait for keystroke %p ", p);
+	getchar();
+
+	ret = io_progVacuum(p, 5);
+	printf("+vacuum_progs=%d\n", ret);
+
+	printf("wait for keystroke %p ", p);
+	getchar();
+end:
+	io_progDestroy(&p);
+	return ret;
 }