sub usage() {
-       print("Usage: $0 [--safe] <dir> [<dir> ...] <master_dir> \n");
+       print("Usage: git relink [--safe] <dir> [<dir> ...] <master_dir> \n");
        print("All directories should contain a .git/objects/ subdirectory.\n");
        print("Options\n");
        print("\t--safe\t" .