SYNOPSIS
$0 --host host
get a shell from remote machine
$0 --host host --listen 9999
$0 --host host --listen 9999 [--addr 10.10.10.1]\
[--user user(default `id -un`)] [--sudo sudoer]
$0 --host host
get a shell from remote machine
$0 --host host --listen 9999
$0 --host host --listen 9999 [--addr 10.10.10.1]\
[--user user(default `id -un`)] [--sudo sudoer]