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## **初始化 修改root 密码** 在已知原来的密码的情况下, 打开终端输入:sudo passwd Password: <— 输入你当前用户的密码 Enter new UNIX password: <— 新的Root用户密码 Retype new UNIX password: <— 重复新的Root用户密码 passwd:password updated successfully 成功之后 su - root ***** ## **ubuntu 百度 ping不通的原因** ![](https://img.kancloud.cn/6a/f5/6af5e43435d72340e6c3bfb4051bc91e_673x471.png) ***** ## **xshell连不上虚拟机的原因 ______openssh-server没有安装 ** ![](https://img.kancloud.cn/68/15/68152d3d1e2da0529391e8a1b742cd11_861x426.png) 直接安装报错 **解决办法:** 1、关闭防火墙 sudo ufw disable 2、开发22端口 sudo ufw allow 22 3、最后安装ssh sudo apt-get install openssh-server https://blog.csdn.net/weixin_44648313/article/details/109077765 #### **如果不成功则看下面** (1)备份/etc/apt/sources.list ~~~javascript sudo cp -i /etc/apt/sources.list /etc/apt/sources.list.backup ~~~ (2)更新repos (我未做) 将以下的内容添加到/etc/apt/sources.list(或者将原来的内容清空再添加下面的源) ~~~javascript deb http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse ~~~  (3)更新: ~~~javascript sudo apt-get update ~~~  (4)安装 ~~~javascript sudo apt-get install openssh-server ~~~   然后就能安装成功了,如果遇到版本依赖的冲突,先按照提示安装对应的依赖版本:如 ~~~javascript apt install openssh-client=1:6.6p1-2ubuntu2.10 ~~~   再正常安装对应的软件包就可以了 ##**如果是这个错误** ![](https://img.kancloud.cn/27/8f/278f38a25e6263eb729dcfecadd83df0_743x154.png) 解决方法: 删掉之前遗留下来的进程 sudo rm /var/cache/apt/archives/lock-frontend sudo  rm /var/lib/dpkg/lock-frontend 1 2 扩展: 要根据问题提示来具体解决,有可能问题提示如下: E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavialable) 这里的lock 跟上面的 lock-frontend 实际上没多大区别,改一下删除的对象即可 sudo rm /var/cache/apt/archives/lock sudo  rm /var/lib/dpkg/lock 转载于:https://www.cnblogs.com/zlfProgrammer/p/10142875.html ### **xshell密码拒绝的问题** 找到这个 ![](https://img.kancloud.cn/39/f9/39f99a73856c72699fa07a908254a8c6_691x223.png) 配置如下 ![](https://img.kancloud.cn/56/65/56652ff1cffeda73e00556dad33f6bdb_792x352.png) # 最后再reboot