Print usage when missing mandatory arguments

diff --git a/examples/fuse_nfs.c b/examples/fuse_nfs.c
index 23a4ce89d26158f4998c3af53632cc6ddd086029..28449eec4c88c52d7520e5cf4b4b4668ea7d23ac 100644 (file)
--- a/examples/fuse_nfs.c
+++ b/examples/fuse_nfs.c
@@ -248,11 +248,13 @@ int main(int argc, char *argv[])
 
        if (url == NULL) {
                fprintf(stderr, "-n was not specified.\n");
+               print_usage(argv[0]);
                ret = 10;
                goto finished;
        }
        if (mnt == NULL) {
                fprintf(stderr, "-m was not specified.\n");
+               print_usage(argv[0]);
                ret = 10;
                goto finished;
        }