Ubuntu ARMv8/AArch64 一条命令设置国内源

flyfish

假定安装的版本是
64-bit ARM (ARMv8/AArch64) server install image
版本是22.04

备份

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

查看原来使用的哪个源

sudo apt nano /etc/apt/sources.list

也可以在这里直接编辑

假如使用的镜像是 http://ports.ubuntu.com/ubuntu-ports/

一条命令

sudo sed -i 's|http://ports.ubuntu.com/ubuntu-ports/|http://repo.huaweicloud.com/ubuntu-ports/|g' /etc/apt/sources.list && sudo apt update

在 sed 命令中，s 和 g 是两个重要的选项，它们分别表示不同的功能：

1. s (substitute):

   • s 是 sed 中最常用的命令之一，表示“替换”。
   • 其基本语法是 s/pattern/replacement/flags，其中：
     • pattern 是要匹配的模式（通常是正则表达式）。
     • replacement 是替换后的文本。
     • flags 是可选的标志，用于控制替换行为。

2. g (global):

   • g 是一个标志，表示“全局替换”。
   • 默认情况下，sed 只会替换每一行中第一个匹配到的模式。如果加上 g 标志，sed 会替换每一行中所有匹配到的模式

命令说明

• s|http://ports.ubuntu.com/ubuntu-ports/|http://repo.huaweicloud.com/ubuntu-ports/|g：

  • s 表示替换操作。
  • http://ports.ubuntu.com/ubuntu-ports/ 是要匹配的模式。
  • http://repo.huaweicloud.com/ubuntu-ports/ 是替换后的文本。
  • g 表示全局替换，即在同一行中如果有多个 http://ports.ubuntu.com/ubuntu-ports/，都会被替换为 http://repo.huaweicloud.com/ubuntu-ports/。

• -i 选项表示直接在文件中进行修改，而不是输出到标准输出。

• && sudo apt update 表示在 sed 命令成功执行后，运行 apt update 命令来更新软件包列表。

原来是

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ports.ubuntu.com/ubuntu-ports/ jammy main restricted
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ports.ubuntu.com/ubuntu-ports/ jammy-updates main restricted
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://ports.ubuntu.com/ubuntu-ports/ jammy universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy universe
deb http://ports.ubuntu.com/ubuntu-ports/ jammy-updates universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://ports.ubuntu.com/ubuntu-ports/ jammy multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy multiverse
deb http://ports.ubuntu.com/ubuntu-ports/ jammy-updates multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://ports.ubuntu.com/ubuntu-ports/ jammy-backports main restricted universe multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy-backports main restricted universe multiverse

deb http://ports.ubuntu.com/ubuntu-ports/ jammy-security main restricted
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy-security main restricted
deb http://ports.ubuntu.com/ubuntu-ports/ jammy-security universe
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy-security universe
deb http://ports.ubuntu.com/ubuntu-ports/ jammy-security multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ jammy-security multiverse

更改后，为了看的清楚些，删除注释

deb http://repo.huaweicloud.com/ubuntu-ports/ jammy main restricted
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy-updates main restricted
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy universe
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy-updates universe
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy multiverse
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy-updates multiverse
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy-backports main restricted universe multiverse
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy-security main restricted
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy-security universe
deb http://repo.huaweicloud.com/ubuntu-ports/ jammy-security multiverse