Index: uspace/app/sbi/src/os/helenos.c
===================================================================
--- uspace/app/sbi/src/os/helenos.c	(revision 5db9084cb9b925c6758f4bc0fac5c31d7125ff35)
+++ uspace/app/sbi/src/os/helenos.c	(revision c51fa7317c9a2cacb5e8d31f2e026c7be3b95e64)
@@ -101,4 +101,10 @@
 }
 
+/** Display survival help message. */
+void os_input_disp_help(void)
+{
+	printf("Press Ctrl-Q to quit.\n");
+}
+
 /** Read one line of input from the user. */
 int os_input_line(char **ptr)
Index: uspace/app/sbi/src/os/os.h
===================================================================
--- uspace/app/sbi/src/os/os.h	(revision 5db9084cb9b925c6758f4bc0fac5c31d7125ff35)
+++ uspace/app/sbi/src/os/os.h	(revision c51fa7317c9a2cacb5e8d31f2e026c7be3b95e64)
@@ -34,4 +34,5 @@
 char *os_str_dup(const char *str);
 int os_str_get_char(const char *str, int index, int *out_char);
+void os_input_disp_help(void);
 int os_input_line(char **ptr);
 int os_exec(char *const cmd[]);
Index: uspace/app/sbi/src/os/posix.c
===================================================================
--- uspace/app/sbi/src/os/posix.c	(revision 5db9084cb9b925c6758f4bc0fac5c31d7125ff35)
+++ uspace/app/sbi/src/os/posix.c	(revision c51fa7317c9a2cacb5e8d31f2e026c7be3b95e64)
@@ -95,4 +95,10 @@
 static char os_input_buffer[OS_INPUT_BUFFER_SIZE];
 
+/** Display survival help message. */
+void os_input_disp_help(void)
+{
+	printf("Send ^C (SIGINT) to quit.\n");
+}
+
 /** Read one line of input from the user. */
 int os_input_line(char **ptr)