アップグレード
クライアントPC（Windows）でTera Termを起動します。
root@www:~~# apt -y update
root@www:~~# apt -y upgrade
vi /etc/apt/sources.list # deb http://ftp.jp.debian.org/debian/ bullseye main contrib non-free deb-src http://ftp.jp.debian.org/debian/ bullseye main contrib non-free deb http://security.debian.org/debian-security bullseye-updates main contrib non-free deb-src http://security.debian.org/debian-security bullseye-updates main contrib non-free # stretch-updates, previously known as 'volatile' deb http://ftp.jp.debian.org/debian/ bullseye-updates main contrib non-free deb-src http://ftp.jp.debian.org/debian/ bullseye-updates main contrib non-free
vi /etc/apt/sources.list deb http://deb.debian.org/debian bullseye-backports main contrib non-free deb-src http://deb.debian.org/debian/ bullseye-backports main contrib non-free
vi /etc/apt/sources.list deb [arch=amd64] https://download.docker.com/linux/debian bullseye stable # deb-src [arch=amd64] https://download.docker.com/linux/debian bullseye stable
vi /etc/apt/sources.list
deb https://packagecloud.io/ookla/speedtest-cli/debian/ bullseye main
deb-src https://packagecloud.io/ookla/speedtest-cli/debian/ bullseye main
root@www:~~# apt update root@www:~~# apt upgrade --without-new-pkgs root@www:~~# apt full-upgrade
root@www:~~# cat /etc/debian_version 11.0
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