ubuntu server 虚拟机命令行模式密码忘了怎么办
看这篇博客成功重置密码:
https://blog.csdn.net/DuanNaiLin/article/details/132510263
用 kali 进行 ssh 连接到这台 ubuntu 上会更好操作,ubuntu server 命令行模式无法复制粘贴。
ubuntu server 虚拟机代理配置有问题
以前的 ip 现在不能用了,需要重新配置代理,我当时是这样配置的:
sudo vim /etc/environment
在此文件中更改代理的 ip 和端口。
ubuntu server 换源
打开终端,以管理员权限登录。
备份原有的软件源列表:
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
打开源列表文件:
sudo nano /etc/apt/sources.list
把文件里原有的内容全部删除。
Ctrl + K
删除一行
根据需要选择国内镜像源并添加到文件中:
阿里云:
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
清华大学开源软件镜像站:
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
清华大学镜像的 GPG Key:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7D8D0BF6
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0BDA11B1D58A4DF9
保存文件并退出编辑器。
Ctrl + X
保存并退出,Y
确认保存,最后回车退出。
更新软件源:
sudo apt update
至此,就把 Ubuntu Server更换到国内镜像源了。