1 files changed, 9 insertions, 0 deletions

diff --git a/miscutils/wall.c b/miscutils/wall.c
index 0a2b89e5e..762f53b72 100644
--- a/miscutils/wall.c
+++ b/miscutils/wall.c
@@ -6,6 +6,15 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
+//usage:#define wall_trivial_usage
+//usage:        "[FILE]"
+//usage:#define wall_full_usage "\n\n"
+//usage:        "Write content of FILE or stdin to all logged-in users"
+//usage:
+//usage:#define wall_sample_usage
+//usage:        "echo foo | wall\n"
+//usage:        "wall ./mymessage"
+
 #include "libbb.h"
 
 int wall_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;