[root@iZbp145r7ktboy4s74fc44Z ~]# ss5 start -m
[INFO] SS5 Version 3.8.9 - Release 8
[INFO] Copyright (C) 2002-2013 by Matteo Ricchetti - <matteo.ricchetti@libero.it>

[INFO] Usage incorrect...
[INFO] Usage: ss5
[INFO]     [-s] Use syslog instead of ss5.log file.
[INFO]     [-v] Print version information.
[INFO]     [-n] Prefork processes (not supported with -t option).
[INFO]     [-t] Threaded mode.
[INFO]     [-u] Username for ss5 execution.
[INFO]     [-b] Bind interface.
[INFO]     [-c] Run syntax check for config file.
[INFO]     [-m] No logging.
[INFO]     [-p] Pid file pathname.
[INFO] Modules:
[INFO]     mod_socks5:      required
[INFO]     mod_authen:      required
[INFO]     mod_author:      required
[INFO]     mod_log:         required
[INFO]     mod_proxy:       required
[INFO]     mod_balance:     optional
[INFO]     mod_bandwidth:   optional
[INFO]     mod_dump:        optional
[INFO]     mod_filter:      optional
[INFO]     mod_socks4:      optional
[INFO]     mod_statistics:  optional