* archival/gzip.c (gzip_main): Display usage if given multiple files.

diff --git a/archival/gzip.c b/archival/gzip.c
index 436393ed5efc71172c89e4deacaac5aa5125b674..732a83e90adf7ae324b97a92817333b72f66e5a6 100644 (file)
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -1246,6 +1246,9 @@ int gzip_main(int argc, char **argv)
                tostdout = 1;
        }
 
+       if (argc - optind > 1)
+               show_usage ();
+
        if (isatty(fileno(stdout)) && tostdout==1 && force==0)
                error_msg_and_die( "compressed data not written to terminal. Use -f to force it.");