2 files changed, 17 insertions, 1 deletions

diff --git a/applets/busybox.c b/applets/busybox.c
index 0c291d0c5..5b19e8a16 100644
--- a/applets/busybox.c
+++ b/applets/busybox.c
@@ -250,6 +250,9 @@ const struct BB_applet applets[] = {
 #ifdef BB_REBOOT
         {"reboot", reboot_main, _BB_DIR_SBIN, reboot_usage},
 #endif
+#ifdef BB_RENICE
+        {"renice", renice_main, _BB_DIR_USR_BIN},
+#endif
 #ifdef BB_RM
         {"rm", rm_main, _BB_DIR_BIN, rm_usage},
 #endif
@@ -484,8 +487,9 @@ int main(int argc, char **argv)
 #ifdef BB_SH
         /* Add in a special case hack -- whenever **argv == '-'
          * (i.e. '-su' or '-sh') always invoke the shell */
-        if (**argv == '-')
+        if (**argv == '-' && *(*argv+1)!= '-') {
                 exit(((*(shell_main)) (argc, argv)));
+        }
 #endif
 
         while (a->name != 0) {
diff --git a/applets/usage.c b/applets/usage.c
index 1031f24bc..3f367f9b1 100644
--- a/applets/usage.c
+++ b/applets/usage.c
@@ -859,6 +859,18 @@ const char reboot_usage[] =
         ;
 #endif
 
+        
+#if defined BB_RENICE
+const char renice_usage[] =
+        "renice priority pid [pid ...]\n"
+#ifndef BB_FEATURE_TRIVIAL_HELP
+        "\nChanges priority of running processes. Allowed priorities range\n"
+        "from 20 (the process runs only when nothing else is running) to 0\n"
+        "(default priority) to -20 (almost nothing else ever gets to run).\n"
+#endif
+        ;
+#endif
+
 #if defined BB_RM
 const char rm_usage[] =
         "rm [OPTION]... FILE...\n"