## **初始化 修改root 密碼**
在已知原來的密碼的情況下,
打開終端輸入:sudo passwd
Password: <— 輸入你當前用戶的密碼
Enter new UNIX password: <— 新的Root用戶密碼
Retype new UNIX password: <— 重復新的Root用戶密碼
passwd:password updated successfully
成功之后 su - root
*****
## **ubuntu 百度 ping不通的原因**

*****
## **xshell連不上虛擬機的原因 ______openssh-server沒有安裝 **

直接安裝報錯
**解決辦法:**
1、關閉防火墻
sudo ufw disable
2、開發22端口
sudo ufw allow 22
3、最后安裝ssh
sudo apt-get install openssh-server
https://blog.csdn.net/weixin_44648313/article/details/109077765
#### **如果不成功則看下面**
(1)備份/etc/apt/sources.list
~~~javascript
sudo cp -i /etc/apt/sources.list /etc/apt/sources.list.backup
~~~
(2)更新repos?(我未做)
將以下的內容添加到/etc/apt/sources.list(或者將原來的內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)安裝
~~~javascript
sudo apt-get install openssh-server
~~~
然后就能安裝成功了,如果遇到版本依賴的沖突,先按照提示安裝對應的依賴版本:如
~~~javascript
apt install openssh-client=1:6.6p1-2ubuntu2.10
~~~
再正常安裝對應的軟件包就可以了
##**如果是這個錯誤**

解決方法:
刪掉之前遺留下來的進程
sudo rm /var/cache/apt/archives/lock-frontend
sudo ?rm /var/lib/dpkg/lock-frontend
1
2
擴展:
要根據問題提示來具體解決,有可能問題提示如下:
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavialable)
這里的lock 跟上面的 lock-frontend 實際上沒多大區別,改一下刪除的對象即可
sudo rm /var/cache/apt/archives/lock
sudo ?rm /var/lib/dpkg/lock
轉載于:https://www.cnblogs.com/zlfProgrammer/p/10142875.html
### **xshell密碼拒絕的問題**
找到這個

配置如下

# 最后再reboot