* 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;