fix error message when use tools with -? option

Signed-off-by: Neil.wrz <wangrunze13@huawei.com>

diff --git a/src/lxc/tools/arguments.h b/src/lxc/tools/arguments.h
index 0f087507989741a9444d8f3d4399ef6db7d1feec..92510ecbca4ceb4337716b602614f9c2324b9256 100644 (file)
--- a/src/lxc/tools/arguments.h
+++ b/src/lxc/tools/arguments.h
@@ -137,6 +137,7 @@ struct lxc_arguments {
 #define LXC_COMMON_OPTIONS                                                     \
            { "name",        required_argument, 0, 'n'         },              \
            { "help",        no_argument,       0, 'h'         },              \
+           { "help",        no_argument,       0, '?'         },              \
            { "usage",       no_argument,       0, OPT_USAGE   },              \
            { "version",     no_argument,       0, OPT_VERSION },              \
            { "quiet",       no_argument,       0, 'q'         },              \