给ubuntu系统换源

发表于 更新于

官方源，在国内的网络环境更新升级工具都比较慢，可以考虑将源替换为国内的源，如清华大学的镜像，
以下以ubuntu为例：

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# 内核版本
uname -a
# Linux pooja 5.4.0-33-generic #37-Ubuntu SMP Thu May 21 12:53:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a
# No LSB modules are available.
# Distributor ID: Ubuntu
# Description:    Ubuntu 20.04 LTS
# Release:        20.04
# Codename:       focal

# 备份官方源
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

替换为清华大学源，
将/etc/apt/sources.list的内容修改为如下

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deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse

修改以后重新update一下

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sudo apt-get update
sudo apt-get upgrade