diff -urN cui89/cui_test.c cui90/cui_test.c
--- cui89/cui_test.c	Mon Mar 31 00:00:00 2014
+++ cui90/cui_test.c	Tue Apr  1 22:00:00 2014
@@ -358,8 +358,6 @@
 
 	char lb_timer1_buf[16];
 
-	cui_dbg_open(ac, av);
-
 	big_new(small2, 0, 0, &p);
 	cui_wh_fit(small2);
 
diff -urN cui89/dbg.c cui90/dbg.c
--- cui89/dbg.c	Mon Mar 31 01:00:00 2014
+++ cui90/dbg.c	Tue Apr  1 22:00:00 2014
@@ -14,6 +14,8 @@
 	int i;
 	char *nc_opt = "localhost 12345";
 
+	if(fp) return 0;
+
 	for(i=1; i<ac; i++) if(strcmp(av[i], "-dbg-en0") == 0) break;
 	if(i<ac) cui_dbg_enable = 0;
 
diff -urN cui89/term.c cui90/term.c
--- cui89/term.c	Mon Mar 31 02:00:00 2014
+++ cui90/term.c	Tue Apr  1 22:00:00 2014
@@ -313,8 +313,11 @@
 	char *bp;
 
 	switch(c){
+	case '\r':
+		cui_term_cr(obj);
+		return;
 	case '\n':
-		cui_term_nl(obj);
+		cui_term_lf(obj);
 		return;
 	case '\t':
 		cx = (p->cx / 8 + 1) * 8;
@@ -350,12 +353,18 @@
 }
 
 void
-cui_term_nl(cui obj)
+cui_term_cr(cui obj)
 {
-	cui_term p = (cui_term)obj;	
-
+	cui_term p = (cui_term)obj;
 	if(p->cursor_onoff) cui_term_buf(obj, p->cx, p->cy)[1] |= UPDATE_FLG;
 	p->cx = 0;
+}
+
+void
+cui_term_lf(cui obj)
+{
+	cui_term p = (cui_term)obj;
+	if(p->cursor_onoff) cui_term_buf(obj, p->cx, p->cy)[1] |= UPDATE_FLG;
 	if(p->cy < obj->h-1) p->cy++;
 	else{
 		memset(cui_term_buf(obj, 0, 0), 0, obj->w * 2); /* 2 : char, attr */
@@ -364,6 +373,13 @@
 	}
 }
 
+void
+cui_term_nl(cui obj)
+{
+	cui_term_cr(obj);
+	cui_term_lf(obj);
+}
+
 char *
 cui_term_buf(cui obj, int cx, int cy)
 {
@@ -417,6 +433,7 @@
 	dup2(slave, 1);
 	dup2(slave, 2);
 #endif
+	cui_dbg_close();
 	execl("/bin/sh", "/bin/sh", "-i", (char *)NULL);
 	exit(0);
 	return 0; /* not reach */
diff -urN cui89/term.h cui90/term.h
--- cui89/term.h	Fri Mar 28 03:00:00 2014
+++ cui90/term.h	Tue Apr  1 22:00:00 2014
@@ -39,6 +39,8 @@
 void cui_term_puts_buf(cui obj, char *s);
 void cui_term_puts_buf_inner(cui obj, char *s);
 
+void cui_term_cr(cui obj);
+void cui_term_lf(cui obj);
 void cui_term_nl(cui obj);
 char *cui_term_buf(cui obj, int cx, int cy);
 void cui_term_move(cui obj, int cx, int cy);