sleep: fix error exit when called as "sh" builtin

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

1 files changed, 2 insertions, 1 deletions

diff --git a/coreutils/sleep.c b/coreutils/sleep.c
index 667db558d..a0cee5a4a 100644
--- a/coreutils/sleep.c
+++ b/coreutils/sleep.c
@@ -74,7 +74,8 @@ int sleep_main(int argc UNUSED_PARAM, char **argv)
         ++argv;
         if (!*argv) {
                 /* Without this, bare "sleep" in ash shows _ash_ --help */
-                if (ENABLE_ASH_SLEEP && applet_name[0] != 's') {
+                /* (ash can be the "sh" applet as well, so check 2nd char) */
+                if (ENABLE_ASH_SLEEP && applet_name[1] != 'l') {
                         bb_simple_error_msg("sleep: missing operand");
                         return EXIT_FAILURE;
                 }