ubuntu必备操作
1 更换apt镜像源
- 备份镜像
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cp /etc/apt/sources.list /etc/apt/sources.list.bak- 查看自己ubuntu版本
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# 查看自己的codename
#查看自己的ubuntu版本[注意关注：DISTRIB_CODENAME，发行代号]
cat /etc/*release
# DISTRIB_CODENAME=cosmic
# 例如(下面是ubuntu的LTS长期支持版)：
# Ubuntu20.04（focal）
# Ubuntu19.10（eoan）
# Ubuntu19.04（disco）
# Ubuntu18.04（bionic）
# Ubuntu16.04（xenial）- 设置国内镜像源
我ubuntu的版本是18.10，国内上没有维护对应的镜像，但是大版本一致即可（所以我采用了bionic）
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vim /etc/apt/sources.list
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deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse- 更新软件列表，完成换源
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apt update- 修复损坏的软件包
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apt-get install -f- 更新软件
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apt-get upgrade2 其他命令
①防火墙相关
bash
# 查看防火墙状态
sudo ufw status
# 开启/关闭防火墙
sudo ufw enable/disable