$ cat ~/.ssh/id_rsa.pub cat: /home/vagrant/.ssh/id_rsa.pub: そのようなファイルやディレクトリはありません $ cd ~/.ssh $ ssh-keygen -t rsa -C mail@mail <----自分のメールアドレス Generating public/private rsa key pair. Enter file in which to save the key (/home/vagrant/.ssh/id_rsa): <-----Enterを押す Enter passphrase (empty for no passphrase): <-----Enterを押す Enter same passphrase again: <-----Ente