备份:

<span class="token function">sudo</span> <span class="token function">cp</span> /etc/apt/sources.list /etc/apt/sources.list.bak

改文件:
————————————————
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy main restricted
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy-updates main restricted
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy universe
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy-updates universe
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy multiverse
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy-updates multiverse
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy-backports main restricted universe multiverse
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy-security main restricted
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy-security universe
deb http://mirrors.cloud.tencent.com/ubuntu-ports jammy-security multiverse
————————————————

换DNS(很重要) sudo vim /etc/resolv.conf ————————————————

This is /run/systemd/resolve/stub-resolv.conf managed by man:systemd-resolved(8).

Do not edit.

#

This file might be symlinked as /etc/resolv.conf. If you’re looking at

/etc/resolv.conf and seeing this text, you have followed the symlink.

#

This is a dynamic resolv.conf file for connecting local clients to the

internal DNS stub resolver of systemd-resolved. This file lists all

configured search domains.

#

Run “resolvectl status” to see details about the uplink DNS servers

currently in use.

#

Third party programs should typically not access this file directly, but only

through the symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a

different way, replace this symlink by a static file or a different symlink.

#

See man:systemd-resolved.service(8) for details about the supported modes of

operation for /etc/resolv.conf.

nameserver 114.114.114.114 options edns0 trust-ad search lan ————————————————

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