add .gitignore

[sojka/can-utils.git] / slcan_attach.c

diff --git a/slcan_attach.c b/slcan_attach.c
index 0ed7abee810eb68ed7b1deb4b40f8c22f84f8cf2..ed6afc7f2bc2bb19f683a6fae46e16784b0a74df 100644 (file)
--- a/slcan_attach.c
+++ b/slcan_attach.c
@@ -86,7 +86,7 @@ int main(int argc, char **argv)
        char *tty;
        int opt;
 
-       while ((opt = getopt(argc, argv, "l:dwocs:b:")) != -1) {
+       while ((opt = getopt(argc, argv, "l:dwocs:b:?")) != -1) {
                switch (opt) {
                case 'l':
                        fprintf(stderr, "Ignored option '-l'\n");
@@ -120,6 +120,7 @@ int main(int argc, char **argv)
                                print_usage(argv[0]);
                        break;
 
+               case '?':
                default:
                        print_usage(argv[0]);
                        break;