私はLinuxを初めて使用し、要件に応じてApache、wget、nfs-commonなどのパッケージをインストールしようとしています。ただし、単一のパッケージもインストールされておらず、すべてのパッケージが以下を提供します。
候補者がエラーにより失敗する -
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package wget is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'wget' has no installation candidate
出力は以下から来ます。sudo apt update
~$ sudo apt update
Err:1 https://download.docker.com/linux/debian buster InRelease
Temporary failure resolving 'download.docker.com'
Err:2 http://cdn-fastly.deb.debian.org/debian stable InRelease
Temporary failure resolving 'cdn-fastly.deb.debian.org'
Err:3 http://ftp.us.debian.org/debian stable InRelease
Temporary failure resolving 'ftp.us.debian.org'
Err:4 http://deb.debian.org/debian buster-updates InRelease
Temporary failure resolving 'deb.debian.org'
Err:5 http://cdn-fastly.deb.debian.org/debian-security stable/updates InRelease
Temporary failure resolving 'cdn-fastly.deb.debian.org'
Err:6 http://ftp.us.debian.org/debian stable-updates InRelease
Temporary failure resolving 'ftp.us.debian.org'
Err:7 http://deb.debian.org/debian stable InRelease
Temporary failure resolving 'deb.debian.org'
Err:8 http://deb.debian.org/debian stable-updates InRelease
Temporary failure resolving 'deb.debian.org'
Err:9 http://deb.debian.org/debian-security stable/updates InRelease
Temporary failure resolving 'deb.debian.org'
Ign:10 cdrom://[Debian GNU/Linux 10.9.0 _Buster_ - Official amd64 NETINST 20210327-10:38] buster InRelease
Err:11 cdrom://[Debian GNU/Linux 10.9.0 _Buster_ - Official amd64 NETINST 20210327-10:38] buster Release
Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Err:12 http://security.debian.org/debian-security buster/updates InRelease
Temporary failure resolving 'security.debian.org'
Err:13 http://security.debian.org stable/updates InRelease
Temporary failure resolving 'security.debian.org'
Err:14 http://ftp.debian.org/debian buster-backports InRelease
Temporary failure resolving 'ftp.debian.org'
Err:15 https://packages.debian.org/stable/web buster InRelease
Temporary failure resolving 'packages.debian.org'
Reading package lists... Done
E: The repository 'cdrom://[Debian GNU/Linux 10.9.0 _Buster_ - Official amd64 NETINST 20210327-10:38] buster Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
ダウンロードパッケージのsource.listも更新しましたが失敗しました。
詳細sources.list
# deb cdrom:[Debian GNU/Linux 10.9.0 _Buster_ - Official amd64 NETINST 20210327-10:38]/ buster main
deb cdrom:[Debian GNU/Linux 10.9.0 _Buster_ - Official amd64 NETINST 20210327-10:38]/ buster main
# Line commented out by installer because it failed to verify:
deb http://security.debian.org/debian-security buster/updates main
# Line commented out by installer because it failed to verify:
deb-src http://security.debian.org/debian-security buster/updates main
# buster-updates, previously known as 'volatile'
# A network mirror was not selected during install. The following entries
# are provided as examples, but you should amend them as appropriate
# for your mirror of choice.
#
deb http://deb.debian.org/debian/ buster-updates main
deb-src http://deb.debian.org/debian/ buster-updates main
# new custom url
deb [arch=amd64] https://download.docker.com/linux/debian buster stable
# custom url 2 for debian
deb https://packages.debian.org/stable/web/ buster web
# custm url
deb http://cdn-fastly.deb.debian.org/debian stable main
deb http://cdn-fastly.deb.debian.org/debian-security stable/updates main
#------------------------------------------------------------------------------#
# OFFICIAL DEBIAN REPOS
#------------------------------------------------------------------------------#
###### Debian Main Repos
deb http://deb.debian.org/debian/ stable main contrib
deb-src http://deb.debian.org/debian/ stable main contrib
deb http://deb.debian.org/debian/ stable-updates main contrib
deb-src http://deb.debian.org/debian/ stable-updates main contrib
deb http://deb.debian.org/debian-security stable/updates main
deb-src http://deb.debian.org/debian-security stable/updates main
deb http://ftp.debian.org/debian buster-backports main
deb-src http://ftp.debian.org/debian buster-backports main
# Debian Ressources
deb http://ftp.us.debian.org/debian/ stable main contrib non-free
deb-src http://ftp.us.debian.org/debian/ stable main contrib non-free
deb http://ftp.us.debian.org/debian/ stable-updates main contrib non-free
deb-src http://ftp.us.debian.org/debian/ stable-updates main contrib non-free
deb http://security.debian.org/ stable/updates main contrib non-free
deb-src http://security.debian.org/ stable/updates main contrib non-free
オペレーティングシステム：Debian GNU/Linux 10（バスター）
ベストアンサー1
あなたのsources.list.またCDROMリポジトリを無効にしてください。 source.listを変更するには、次のコマンドを使用します（ここで文書を端末にコピーして貼り付けます）。
cat <<EOF |sudo tee /etc/apt/sources.list
deb [arch=amd64] https://download.docker.com/linux/debian buster stable
deb http://deb.debian.org/debian buster main contrib non-free
deb-src http://deb.debian.org/debian buster main contrib non-free
deb http://deb.debian.org/debian-security/ buster/updates main contrib non-free
deb-src http://deb.debian.org/debian-security/ buster/updates main contrib non-free
deb http://deb.debian.org/debian buster-updates main contrib non-free
deb-src http://deb.debian.org/debian buster-updates main contrib non-free
EOF
次に、次を実行します。
echo -e "nameserver 8.8.8.8\nnameserver 8.8.4.4" |sudo tee -a /etc/resolv.conf
sudo apt update
sudo apt install wget