helpful message for unrecognized command

1 files changed, 3 insertions, 0 deletions

diff --git a/booki.c b/booki.c
index 79563fe..9a532fe 100644
--- a/booki.c
+++ b/booki.c
@@ -551,6 +551,9 @@ int main(int argc, char* argv[]) {
         open(booki_file);
     } else if (strcmp(argv[1], "search") == 0) {
         remaining = search(argc - 1, argv + 1, booki_file);
+    } else {
+        printf("unknown subcommand: '%s'\n", argv[1]);
+        return 1;
     }
 
     return 0;