私はデスクトップにLinux Mint 17.02 Cinnamonをインストールしましたが、最初に実行したときにsudo apt-get update干渉するファイルについて尋ねられたが、何らかの理由でスキップするように言われました。これで実行すると、update多数のファイルが検索され、「更新されたファイルがありません」というメッセージは表示されません。以下は、10回実行中の10回のスクリーンショットです。出力は次のとおりです。
matthias@matthias ~ $ sudo apt-get update
Ign http://dl.google.com stable InRelease
Ign http://extra.linuxmint.com rafaela InRelease
Ign http://packages.linuxmint.com rafaela InRelease
Hit http://security.ubuntu.com trusty-security InRelease
Ign http://repo.mongodb.org xenial/mongodb-org/3.2 InRelease
Hit http://extra.linuxmint.com rafaela Release.gpg
Hit http://packages.linuxmint.com rafaela Release.gpg
Hit http://dl.google.com stable Release.gpg
Ign http://repo.mongodb.org xenial/mongodb-org/3.4 InRelease
Hit http://dl.google.com stable Release
Hit http://security.ubuntu.com trusty-security/main amd64 Packages
Hit http://extra.linuxmint.com rafaela Release
Hit http://packages.linuxmint.com rafaela Release
Hit http://security.ubuntu.com trusty-security/restricted amd64 Packages
Ign http://archive.ubuntu.com trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://repo.mongodb.org xenial/mongodb-org/3.2 Release.gpg
Ign http://archive.canonical.com trusty InRelease
Hit http://dl.google.com stable/main amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe amd64 Packages
Hit http://packages.linuxmint.com rafaela/main amd64 Packages
Hit http://extra.linuxmint.com rafaela/main amd64 Packages
Hit http://repo.mongodb.org xenial/mongodb-org/3.4 Release.gpg
Hit http://security.ubuntu.com trusty-security/multiverse amd64 Packages
Hit http://archive.ubuntu.com trusty-updates InRelease
Hit http://packages.linuxmint.com rafaela/upstream amd64 Packages
Hit http://extra.linuxmint.com rafaela/main i386 Packages
Hit http://ppa.launchpad.net trusty InRelease
Hit http://archive.canonical.com trusty Release.gpg
Hit http://security.ubuntu.com trusty-security/main i386 Packages
Hit http://repo.mongodb.org xenial/mongodb-org/3.2 Release
Hit http://security.ubuntu.com trusty-security/restricted i386 Packages
Hit http://packages.linuxmint.com rafaela/import amd64 Packages
Hit http://repo.mongodb.org xenial/mongodb-org/3.4 Release
Hit http://archive.ubuntu.com trusty Release.gpg
Hit http://security.ubuntu.com trusty-security/universe i386 Packages
Hit http://ppa.launchpad.net trusty InRelease
Hit http://archive.canonical.com trusty Release
Hit http://packages.linuxmint.com rafaela/main i386 Packages
Hit http://security.ubuntu.com trusty-security/multiverse i386 Packages
Hit http://repo.mongodb.org xenial/mongodb-org/3.2/multiverse amd64 Packages
Hit http://security.ubuntu.com trusty-security/main Translation-en
Hit http://packages.linuxmint.com rafaela/upstream i386 Packages
Hit http://archive.ubuntu.com trusty-updates/main amd64 Packages
Hit http://ppa.launchpad.net trusty InRelease
Hit http://archive.canonical.com trusty/partner amd64 Packages
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Hit http://repo.mongodb.org xenial/mongodb-org/3.2/multiverse i386 Packages
Hit http://packages.linuxmint.com rafaela/import i386 Packages
Hit http://security.ubuntu.com trusty-security/restricted Translation-en
Hit http://archive.ubuntu.com trusty-updates/restricted amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Hit http://ppa.launchpad.net trusty InRelease
Hit http://archive.canonical.com trusty/partner i386 Packages
Ign http://extra.linuxmint.com rafaela/main Translation-en_US
Hit http://repo.mongodb.org xenial/mongodb-org/3.4/multiverse amd64 Packages
Ign http://extra.linuxmint.com rafaela/main Translation-en
Hit http://archive.ubuntu.com trusty-updates/universe amd64 Packages
Ign http://dl.google.com stable/main Translation-en_US
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://archive.canonical.com trusty/partner Translation-en
Hit http://repo.mongodb.org xenial/mongodb-org/3.4/multiverse arm64 Packages
Hit http://archive.ubuntu.com trusty-updates/multiverse amd64 Packages
Ign http://dl.google.com stable/main Translation-en
Hit http://ppa.launchpad.net trusty/main Sources
Hit http://archive.ubuntu.com trusty-updates/main i386 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://archive.ubuntu.com trusty-updates/restricted i386 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://archive.ubuntu.com trusty-updates/universe i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://archive.ubuntu.com trusty-updates/multiverse i386 Packages
Hit http://archive.ubuntu.com trusty-updates/main Translation-en
Hit http://ppa.launchpad.net trusty/main Sources
Hit http://archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://archive.ubuntu.com trusty-updates/restricted Translation-en
Ign http://packages.linuxmint.com rafaela/import Translation-en_US
Ign http://repo.mongodb.org xenial/mongodb-org/3.2/multiverse Translation-en_US
Ign http://packages.linuxmint.com rafaela/import Translation-en
Hit http://ppa.launchpad.net trusty/main i386 Packages
Ign http://repo.mongodb.org xenial/mongodb-org/3.2/multiverse Translation-en
Ign http://packages.linuxmint.com rafaela/main Translation-en_US
Hit http://archive.ubuntu.com trusty-updates/universe Translation-en
Ign http://packages.linuxmint.com rafaela/main Translation-en
Ign http://repo.mongodb.org xenial/mongodb-org/3.4/multiverse Translation-en_US
Ign http://repo.mongodb.org xenial/mongodb-org/3.4/multiverse Translation-en
Ign http://packages.linuxmint.com rafaela/upstream Translation-en_US
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign http://packages.linuxmint.com rafaela/upstream Translation-en
Hit http://archive.ubuntu.com trusty Release
Hit http://ppa.launchpad.net trusty/main Sources
Hit http://archive.ubuntu.com trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://archive.ubuntu.com trusty/universe amd64 Packages
Hit http://ppa.launchpad.net trusty/main Sources
Hit http://archive.ubuntu.com trusty/multiverse amd64 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://archive.ubuntu.com trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://archive.ubuntu.com trusty/restricted i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://archive.ubuntu.com trusty/universe i386 Packages
Hit http://ppa.launchpad.net trusty Release
Hit http://archive.ubuntu.com trusty/multiverse i386 Packages
Hit http://ppa.launchpad.net trusty/main Sources
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://archive.ubuntu.com trusty/main Translation-en
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://archive.ubuntu.com trusty/multiverse Translation-en
Hit http://archive.ubuntu.com trusty/restricted Translation-en
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://archive.ubuntu.com trusty/universe Translation-en
Ign http://archive.ubuntu.com trusty/main Translation-en_US
Ign http://archive.ubuntu.com trusty/multiverse Translation-en_US
Ign http://archive.ubuntu.com trusty/restricted Translation-en_US
Ign http://archive.ubuntu.com trusty/universe Translation-en_US
Reading package lists... Done
設定を消去する方法はありますか？なぜこれが起こるのか完全にはわからないので、解決策がわかりません。ありがとう
編集：/etc/apt/sources.listと/etc/apt/sources/apt.confの内容を尋ねるコメント。後者はありませんが、最初のものは次のとおりです。
#deb cdrom:[Linux Mint 17.2 _Rafaela_ - Release amd64 20150721]/ .Trash-1000/files/dists.2/xenial/main/binary-i386/
#deb cdrom:[Linux Mint 17.2 _Rafaela_ - Release amd64 20150721]/ .Trash-1000/files/dists.2/xenial/restricted/binary-amd64/
#deb cdrom:[Linux Mint 17.2 _Rafaela_ - Release amd64 20150721]/ .Trash-1000/files/dists.2/xenial/restricted/binary-i386/
#deb cdrom:[Linux Mint 17.2 _Rafaela_ - Release amd64 20150721]/ trusty contrib main non-free
#deb cdrom:[Linux Mint 17.2 _Rafaela_ - Release amd64 20150721]/.Trash-1000/files/ dists.2/xenial/main/binary-amd64/
#deb cdrom:[Linux Mint 17.2 _Rafaela_ - Release amd64 20150721]/.Trash-1000/files/ xenial main restricted