nano /etc/apt/sources.list deb http://old-releases.ubuntu.com/ubuntu lucid main restricted deb-src http://old-releases.ubuntu.com/ubuntu lucid main restricted deb http://old-releases.ubuntu.com/ubuntu lucid-updates main restricted deb-src http://old-releases.ubuntu.com/ubuntu lucid-updates main restricted deb http://old-releases.ubuntu.com/ubuntu lucid universe deb-src http://old-releases.ubuntu.com/ubuntu lucid universe deb http://old-releases.ubuntu.com/ubuntu lucid-updates universe deb-src http://old-releases.ubuntu.com/ubuntu lucid-updates universe deb http://old-releases.ubuntu.com/ubuntu lucid multiverse deb-src http://old-releases.ubuntu.com/ubuntu lucid multiverse deb http://old-releases.ubuntu.com/ubuntu lucid-updates multiverse deb-src http://old-releases.ubuntu.com/ubuntu lucid-updates multiverse deb http://old-releases.ubuntu.com/ubuntu lucid-security main restricted deb-src http://old-releases.ubuntu.com/ubuntu lucid-security main restricted deb http://old-releases.ubuntu.com/ubuntu lucid-security universe deb-src http://old-releases.ubuntu.com/ubuntu lucid-security universe deb http://old-releases.ubuntu.com/ubuntu lucid-security multiverse deb-src http://old-releases.ubuntu.com/ubuntu lucid-security multiverse 更新 apt-get update apt-get upgrade 安装sshd apt-get install openssh-server /etc/init.d/ssh start