1.修改ubuntu的root密码
    sudo passwd root

2.vim安装
    vim apt install vim

3.按照ssh服务
    sudo apt update
    sudo apt install openssh-server
    
    启动ssh
    sudo systemctl start ssh
    开机自启

    sudo systemctl enable ssh

    防火墙设置（可选）
    sudo ufw allow ssh

    开启root登录
    sudo vim /etc/ssh/sshd_config
    PermitRootLogin prohibit-password 找到这个，去掉前面的#，proht...改为yes

    重启ssh
    sudo systemctl restart ssh

4.换源
    sudo vim /etc/apt/sources.list
    将里面内容填入该文件中
    {
        deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
        deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
        deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
        deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
        deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
    }

4.开发环境搭建
    sudo apt install gawk wget git diffstat unzip 
    sudo apt install texinfo gcc-multilib build-essential chrpath socat 
    sudo apt install libsdl1.2-dev xterm ncurses-dev lzop libelf-dev make
    sudo apt-get install git ssh make gcc g++ libssl-dev liblz4-tool
    sudo apt-get install expect patchelf chrpath gawk texinfo diffstat binfmt-support
    sudo apt-get install qemu-user-static live-build bison flex fakeroot cmake
    sudo apt-get install gcc-multilib g++-multilib unzip device-tree-compiler ncurses-dev libncurses5-dev


 5.泰山派sdk
    解压出来的.repo包执行下面命令
    .repo/repo/repo sync -l -j88
    如果报错：/usr/bin/env: ‘python’: No such file or director
    apt-get install repo