sshd -V (return code: 255)
sshd re-exec requires execution with an absolute path
sshd -HELP (return code: 1)
option requires an argument -- h
OpenSSH_7.2p2 Ubuntu-4ubuntu2.1, OpenSSL 1.0.2g 1 Mar 2016
usage: sshd [-46DdeiqTt] [-b bits] [-C connection_spec] [-c host_cert_file]
[-E log_file] [-f config_file] [-g login_grace_time]
[-h host_key_file] [-k key_gen_time] [-o option] [-p port]
[-u len]