详细记录从购买树莓派开始瞎搞命令等情景，完整的写在其他文章内，有一出没一出的记录在这里

系统：ubuntu-core， snap

  1. 我想使用apt-get咋办，使用如下命令：
    sudo snap install classic --devmode --edge
    then
    sudo classic
    then apt-get is available

  2. 这个系统要啥没啥，很多需要自己搞
    分区：略
    修改源：
    修改/etc/apt/sources.list文件，替换为以下内容。这里是14.04的阿里云源。

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    deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
    deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
    deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
    deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
    deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
    deb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
    deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
    deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
    deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
    deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse

  3. 安装内核

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    sudo chroot /mnt/root
    apt-get update
    apt-get install linux-generic

  4. 安装SSH（可选）
    apt-get install openssh-server

默认情况下SSH Server不允许使用root登录，需要进行修改。
修改/ect/ssh/ssd_config，大概在28行左右有PermitRootLogin without-password改成PermitRootLogin yes