1 files changed, 1 insertions, 0 deletions
diff --git a/src/tty.c b/src/tty.c
index 66ecb8776..68332a7c2 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -119,6 +119,7 @@ usage (status)
     {
       printf ("Usage: %s [OPTION]...\n", program_name);
       printf ("\
+Print the file name of the terminal connected to standard input.\n\
 \n\
   -s, --silent, --quiet   print nothing, only return an exit status\n\
       --help              display this help and exit\n\