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查看unbuntu版本名（lsb_release -c命令）

用以下命令查看版本名：

lsb_release -c

在Linux系统中，lsb_release -c命令用于显示当前系统的发行版代号（Codename）。在这个命令中，lsb代表“Linux标准库（Linux Standard Base）”，它是一种为Linux操作系统定义标准化基础架构的规范。该规范旨在确保不同Linux发行版之间的二进制兼容性，并提供一组公共的API和工具集，以便开发人员可以编写与多个Linux发行版兼容的应用程序。因此，lsb_release -c命令是一个Linux系统命令，用于查询当前系统的发行版代号，以便在开发和管理应用程序时确保跨Linux发行版的兼容性。

我在ubuntu20.04上看：

我在ubuntu16.04上看：

各个版本源代号（仅供参考，具体代号用上面命令查）

ubuntu各个版本的源如下：
Ubuntu 12.04 (LTS)代号为precise。
Ubuntu 14.04 (LTS)代号为trusty。
Ubuntu 15.04 代号为vivid。
Ubuntu 15.10 代号为wily。
Ubuntu 16.04 (LTS)代号为xenial。
Ubuntu 18.04 (LTS)代号为bionic。
Ubuntu 20.04 (LTS)代号为focal。

各版本软件源

Ubuntu20.10

阿里源：

deb http://mirrors.aliyun.com/ubuntu/ groovy main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ groovy-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ groovy-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ groovy-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ groovy-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ groovy main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ groovy-security main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ groovy-updates main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ groovy-proposed main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ groovy-backports main restricted universe multiverse

清华源：

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

Ubuntu20.04

阿里源：

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse

清华源：

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

Ubuntu19.10

阿里源：

deb http://mirrors.aliyun.com/ubuntu/ eoan main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ eoan-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ eoan-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ eoan-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ eoan-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ eoan main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ eoan-security main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ eoan-updates main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ eoan-proposed main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ eoan-backports main restricted universe multiverse

清华源：

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

Ubuntu19.04

阿里源：

deb http://mirrors.aliyun.com/ubuntu/ disco main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ disco-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ disco-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ disco-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ disco-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ disco main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ disco-security main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ disco-updates main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ disco-proposed main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ disco-backports main restricted universe multiverse

清华源：

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

Ubuntu18.04

阿里源：

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

清华源：

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

Ubuntu16.04

阿里源：

deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse

清华源：

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

参考文章：Ubuntu各个版本换源阿里源、清华源