1 files changed, 8 insertions, 0 deletions
diff --git a/coreutils/sum.c b/coreutils/sum.c
index e087fb8..9e6b0c5 100644
--- a/coreutils/sum.c
+++ b/coreutils/sum.c
@@ -13,6 +13,14 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
+//usage:#define sum_trivial_usage
+//usage:       "[-rs] [FILE]..."
+//usage:#define sum_full_usage "\n\n"
+//usage:       "Checksum and count the blocks in a file\n"
+//usage:     "\nOptions:"
+//usage:     "\n	-r	Use BSD sum algorithm (1K blocks)"
+//usage:     "\n	-s	Use System V sum algorithm (512byte blocks)"
+
 #include "libbb.h"
 
 enum { SUM_BSD, PRINT_NAME, SUM_SYSV };