ubuntu更换软件源，安装搜狗拼音输入法

Ubuntu系统安装完成后，设置root账户密码。

ctrl +alt +T 打开终端terminal：

sudo passwd root

4321#输入原账号密码

1234#设置root账户密码

1234#确认root账户密码

su#切换到root用户

vi /etc/apt/sources.list#编辑软件源文件，将下面的文字添加到文件中

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

#更新一下

apt-get update

apt-get upgrade

#执行apt-get upgrade报错解决办法

[email protected]:/home/yu# apt-get upgrade

E: 无法获得锁 /var/lib/dpkg/lock-frontend - open (11: 资源暂时不可用)

E: 无法获取 dpkg 前端锁 (/var/lib/dpkg/lock-frontend)，是否有其他进程正占用它？

ro[email protected]:/home/yu#  rm /var/lib/dpkg/lock-frontend

[email protected]:/home/yu# apt-get upgrade

E: 无法获得锁 /var/lib/dpkg/lock - open (11: 资源暂时不可用)

E: 无法锁定管理目录(/var/lib/dpkg/)，是否有其他进程正占用它？

[email protected]:/home/yu# rm /var/lib/dpkg/lock

[email protected]:/home/yu# apt-get upgrade

安装搜狗拼音输入法：

#前提下载好软件包，安装搜狗拼音之前先安装fcitx

[email protected]:/home/yu# apt-get install fcitx

[email protected]:/tmp/mozilla_yu0# install ./sogoupinyin_2.3.1.0112_amd64.deb

apt install /home/yu/下载/netease-cloud-music_1.2.1_amd64_ubuntu_20190428.deb