0.更新镜像源

1. 修改/etc/apt/sources.list,在其中添加阿里源，因为Ubuntu和其他版本的Linux工具不同，权限这一块做的比较完善，所以我们直接切换至root模式下，进行此步操作

   $sudo su    #切换至root
   #在此输入你的root密码
   #cd /etc/apt/
   #cp -p sources.list sources.list_bak   # 备份原文件
   #vi sources.list    #编辑配置文件
   
   在配置文件最前面添加如下信息：
   deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
   deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
   deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
   deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
   deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
   
   

2. 使用以下命令更新系统和工具

   #apt-get update  # 刷新系统
   #apt-get dist-upgrade  #安装更新
   
   

1.打开Ubuntu自带的Firefox浏览器，输入下面网址

https://pinyin.sogou.com/linux/

2. 选择适合于自己Linux版本的版本软件，保存文件

3.打开终端，进入到下载目录，输入以下命令(建议在root下操作)

#sudo dpkg -i sogopinyin_2.2.0.0108_amd64.deb
# sudo apt-get install -f