Merge the help message into a single function,
so that we can use it somewhere else.
Signed-off-by: BangLang Huang <banglang.huang@foxmail.com>
(cherry picked from commit 2a253e7cdb)
Merge the help message into a single function,
so that we can use it somewhere else.
Signed-off-by: BangLang Huang <banglang.huang@foxmail.com>
(cherry picked from commit 2a253e7cdb)