shuf: with -i LOW-HIGH, do not allow any argv's

function                                             old     new   delta
shuf_main                                            436     441      +5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/coreutils/shuf.c b/coreutils/shuf.c
index 4b41d5e71..fc9635147 100644
--- a/coreutils/shuf.c
+++ b/coreutils/shuf.c
@@ -92,6 +92,9 @@ int shuf_main(int argc, char **argv)
                 char *dash;
                 unsigned lo, hi;
 
+                if (argv[0])
+                        bb_show_usage();
+
                 dash = strchr(opt_i_str, '-');
                 if (!dash) {
                         bb_error_msg_and_die("bad range '%s'", opt_i_str);