SYNOPSIS

 $0 --range range /file/1 /file/2
 $0 --range range #default filelist in remote /etc/mydan.file 

    tail file from remote machine

 $0 --range range --listen 9999

 $0 --range range --listen 9999 [--addr 10.10.10.1]\
      [--user user(default `id -un`)] [--sudo sudoer]

   --seek T0 (defaule) || --seek H0 || --seek T1024