mxqkill: Update usage string

mxqkill.c

@@ -41,6 +41,7 @@ static void print_usage(void)
     "Usage:\n"
     "  %s [options]\n"
     "  %s [options] --group-id=GROUPID\n"
+    "  %s [options] --job-id=JOBID\n"
     "\n"
     "Synopsis:\n"
     "  kill/cancel jobs running in MXQ cluster\n"
@@ -49,7 +50,6 @@ static void print_usage(void)
     "\n"
     "  -g, --group-id=GROUPID   cancel/kill group <GROUPID>\n"
     "  -J, --job-id=JOBID       cancel job <JOBID>\n"
-    "  -u, --user=NAME|UID      cancel group for user. (root only)\n"
     "\n"
     "  -v, --verbose   be more verbose\n"
     "      --debug     set debug log level (default: warning log level)\n"
@@ -62,10 +62,15 @@ static void print_usage(void)
     "  -M, --mysql-default-file[=MYSQLCNF]     (default: %s)\n"
     "  -S, --mysql-default-group[=MYSQLGROUP]  (default: %s)\n"
     "\n"
+    "Privileged:\n"
+    "\n"
+    "  -u, --user=NAME|UID      assume given username\n"
+    "\n"
     "Environment:\n"
     "  MXQ_MYSQL_DEFAULT_FILE   change default for MYSQLCNF\n"
     "  MXQ_MYSQL_DEFAULT_GROUP  change default for MYSQLGROUP\n"
     "\n",
+        program_invocation_short_name,
         program_invocation_short_name,
         program_invocation_short_name,
         MXQ_MYSQL_DEFAULT_FILE_STR,