--- libaitio/example/test_exec.c	2013/12/05 17:12:16	1.1.2.6
+++ libaitio/example/test_exec.c	2013/12/08 21:11:54	1.1.2.12
@@ -1,4 +1,7 @@
 #include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
 #include <aitio.h>
 #include <sys/wait.h>
 
@@ -7,7 +10,9 @@ int
 main(int argc, char **argv)
 {
 	prog_t *p;
+	int f;
 	int ret = 0;
+	char str[BUFSIZ];
 
 	if (argc < 2)
 		return 1;
@@ -16,7 +21,7 @@ main(int argc, char **argv)
 	if (!p) {
 		ELIBERR(io);
 		return 2;
-	} else if ((ret = io_progCheck(p))) {
+	} else if ((ret = io_progCheck(p, 0))) {
 		printf("0.exited procs=%d\n", ret);
 		goto end;
 	} else {
@@ -24,7 +29,7 @@ main(int argc, char **argv)
 		getchar();
 	}
 
-	ret = io_progCheck(p);
+	ret = io_progCheck(p, 0);
 	if (ret) {
 		printf("1.exited procs=%d\n", ret);
 		goto end;
@@ -43,6 +48,25 @@ main(int argc, char **argv)
 
 	printf("wait for keystroke %p ", p);
 	getchar();
+
+again:
+	f = io_progAttach(p);
+	printf("f=%d\n", f);
+	write(f, "v\n", 1);
+	memset(str, 0, sizeof str);
+	while (read(f, str, sizeof str) > 0) {
+		printf(">>> %s", str);
+		memset(str, 0, sizeof str);
+		read(0, str, sizeof str);
+		if (*str == '.')
+			break;
+		write(f, str, strlen(str));
+	}
+	io_progDetach(p, f);
+
+	printf("(r) wait for keystroke %p ", p);
+	if (getchar() == 'a')
+		goto again;
 end:
 	io_progDestroy(&p);
 	return ret;