usage : sshlogin <[user@]server>
password file needs on ~/.ssh/.password/<[user@]server>
sshpass
centos : yum install sshpass
osx : SSHPASSのインストール（OS X）https://qiita.com/norikt/items/5d9aa80176ecb9b9c833
SSH/SCP のログイン自動化に sshpass が便利すぎた http://blog.amedama.jp/entry/2017/06/03/131852