当我尝试运行命令sudo apt-get update时，我会得到以下内容：
Ign http://security.debian.org jessie/updates InRelease
Ign http://security.debian.org jessie/updates Release.gpg
Ign http://security.debian.org jessie/updates Release
Ign http://security.debian.org jessie/updates/main Sources/DiffIndex
Ign http://packages.dotdeb.org jessie InRelease
Ign http://httpredir.debian.org jessie InRelease
Ign http://security.debian.org jessie/updates/contrib Sources/DiffIndex
Ign http://httpredir.debian.org jessie-updates InRelease
Ign http://ftp.debian.org jessie InRelease
Hit http://debmon.org debmon-jessie InRelease
Ign http://security.debian.org jessie/updates/non-free Sources/DiffIndex
Ign http://httpredir.debian.org jessie Release.gpg
Ign http://ftp.debian.org jessie-updates InRelease
Ign http://packages.dotdeb.org jessie Release.gpg
Ign http://security.debian.org jessie/updates/main amd64 Packages/DiffIndex
Ign http://security.debian.org jessie/updates/contrib amd64 Packages/DiffIndex
Ign http://httpredir.debian.org jessie-updates Release.gpg
Ign http://packages.dotdeb.org jessie Release
Ign http://security.debian.org jessie/updates/non-free amd64 Packages/DiffIndex
Ign http://httpredir.debian.org jessie Release
Hit http://ftp.debian.org jessie Release.gpg
Ign http://ftp.debian.org jessie-updates Release.gpg
Ign http://httpredir.debian.org jessie-updates Release
Hit http://debmon.org debmon-jessie/main amd64 Packages
Ign http://packages.dotdeb.org jessie/all Sources/DiffIndex
Ign http://packages.dotdeb.org jessie/all amd64 Packages/DiffIndex
Hit http://ftp.debian.org jessie Release
Ign http://ftp.debian.org jessie-updates Release
Ign http://debmon.org debmon-jessie/main Translation-en_NZ
Ign http://debmon.org debmon-jessie/main Translation-en
Ign http://ftp.debian.org jessie-updates/main Sources/DiffIndex
Ign http://ftp.debian.org jessie-updates/contrib Sources/DiffIndex
Ign http://ftp.debian.org jessie-updates/non-free Sources/DiffIndex
Get:1 http://ftp.debian.org jessie-updates/main amd64 Packages/DiffIndex [6,916 B]
Ign http://ftp.debian.org jessie-updates/contrib amd64 Packages/DiffIndex
Get:2 http://ftp.debian.org jessie-updates/non-free amd64 Packages/DiffIndex [736 B]
Ign http://security.debian.org jessie/updates/contrib Translation-en_NZ
Ign http://security.debian.org jessie/updates/contrib Translation-en
Ign http://security.debian.org jessie/updates/main Translation-en_NZ
Ign http://packages.dotdeb.org jessie/all Translation-en_NZ
Ign http://security.debian.org jessie/updates/main Translation-en
Ign http://security.debian.org jessie/updates/non-free Translation-en_NZ
Hit http://ftp.debian.org jessie/main Sources
Ign http://packages.dotdeb.org jessie/all Translation-en
Ign http://security.debian.org jessie/updates/non-free Translation-en
Hit http://ftp.debian.org jessie/contrib Sources
Err http://packages.dotdeb.org jessie/all Sources
503 OUT OF DISK SPACE
Err http://security.debian.org jessie/updates/main Sources
404 Not Found
Hit http://ftp.debian.org jessie/non-free Sources
Err http://security.debian.org jessie/updates/contrib Sources
404 Not Found
Hit http://ftp.debian.org jessie/main amd64 Packages
Hit http://ftp.debian.org jessie/contrib amd64 Packages
Err http://security.debian.org jessie/updates/non-free Sources
404 Not Found
Err http://packages.dotdeb.org jessie/all amd64 Packages
503 OUT OF DISK SPACE
Hit http://ftp.debian.org jessie/non-free amd64 Packages
Err http://security.debian.org jessie/updates/main amd64 Packages
404 Not Found
Hit http://ftp.debian.org jessie/contrib Translation-en
Err http://security.debian.org jessie/updates/contrib amd64 Packages
404 Not Found
Hit http://ftp.debian.org jessie/main Translation-en
Err http://security.debian.org jessie/updates/non-free amd64 Packages
404 Not Found
Hit http://ftp.debian.org jessie/non-free Translation-en
Ign http://ftp.debian.org jessie-updates/contrib Translation-en_NZ
Ign http://ftp.debian.org jessie-updates/contrib Translation-en
Ign http://ftp.debian.org jessie-updates/main Translation-en_NZ
Ign http://ftp.debian.org jessie-updates/main Translation-en
Ign http://ftp.debian.org jessie-updates/non-free Translation-en_NZ
Ign http://ftp.debian.org jessie-updates/non-free Translation-en
Err http://ftp.debian.org jessie-updates/main Sources
404 Not Found
Err http://ftp.debian.org jessie-updates/contrib Sources
404 Not Found
Err http://ftp.debian.org jessie-updates/non-free Sources
404 Not Found
Err http://ftp.debian.org jessie-updates/contrib amd64 Packages
404 Not Found
Err http://httpredir.debian.org jessie/main amd64 Packages
404 Not Found
Err http://httpredir.debian.org jessie/contrib amd64 Packages
404 Not Found
Err http://httpredir.debian.org jessie/non-free amd64 Packages
404 Not Found
Ign http://httpredir.debian.org jessie/contrib Translation-en_NZ
Ign http://httpredir.debian.org jessie/contrib Translation-en
Ign http://httpredir.debian.org jessie/main Translation-en_NZ
Ign http://httpredir.debian.org jessie/main Translation-en
Ign http://httpredir.debian.org jessie/non-free Translation-en_NZ
Ign http://httpredir.debian.org jessie/non-free Translation-en
Err http://httpredir.debian.org jessie-updates/main amd64 Packages
404 Not Found
Err http://httpredir.debian.org jessie-updates/contrib amd64 Packages
404 Not Found
Err http://httpredir.debian.org jessie-updates/non-free amd64 Packages
404 Not Found
Ign http://httpredir.debian.org jessie-updates/contrib Translation-en_NZ
Ign http://httpredir.debian.org jessie-updates/contrib Translation-en
Ign http://httpredir.debian.org jessie-updates/main Translation-en_NZ
Ign http://httpredir.debian.org jessie-updates/main Translation-en
Ign http://httpredir.debian.org jessie-updates/non-free Translation-en_NZ
Ign http://httpredir.debian.org jessie-updates/non-free Translation-en
Fetched 7,652 B in 58s (130 B/s)
W: Failed to fetch http://security.debian.org/dists/jessie/updates/main/source/Sources 404 Not Found
W: Failed to fetch http://security.debian.org/dists/jessie/updates/contrib/source/Sources 404 Not Found
W: Failed to fetch http://security.debian.org/dists/jessie/updates/non-free/source/Sources 404 Not Found
W: Failed to fetch http://security.debian.org/dists/jessie/updates/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://security.debian.org/dists/jessie/updates/contrib/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://security.debian.org/dists/jessie/updates/non-free/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie/contrib/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie/non-free/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie-updates/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie-updates/contrib/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie-updates/non-free/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://packages.dotdeb.org/dists/jessie/all/source/Sources 503 OUT OF DISK SPACE
W: Failed to fetch http://packages.dotdeb.org/dists/jessie/all/binary-amd64/Packages 503 OUT OF DISK SPACE
W: Failed to fetch http://ftp.debian.org/debian/dists/jessie-updates/main/source/Sources 404 Not Found
W: Failed to fetch http://ftp.debian.org/debian/dists/jessie-updates/contrib/source/Sources 404 Not Found
W: Failed to fetch http://ftp.debian.org/debian/dists/jessie-updates/non-free/source/Sources 404 Not Found
W: Failed to fetch http://ftp.debian.org/debian/dists/jessie-updates/contrib/binary-amd64/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
另外，我不小心删除了PHP5软件包，现在我无法将它们安装回，我认为为什么无法安装缺失的软件包是由于无法成功运行APT-GET引起的问题。我正在使用Linux Debian Jessie V8
任何帮助，请谢谢：：）
我设法解决了这个问题，在下面我发布了如何解决该问题的逐步指南：
- 确保通过从内部/ettc/apt/sources.list.d/{thirdpartyfilename.list.list} 来确保系统使用的任何第三方存储库将被禁用。
- 确保File/etc/apt/sources.list具有正确的有效源列表，如果您不确定如何生成有效的源列表，可以通过此网站https：//debgen.simplylinux使用生成器。CH/只需输入位置，即您使用的软件的发布（例如Debian Jessie），并确保将Debian分支机构的所有盒子和Debian Updates的所有盒子打勾
- 通常，源列表可能不是最新的，因此将源的位置更改为另一个国家/地区的服务器实际上可能使其正常工作。例如。http://ftp.debian.org可能会给出破裂的结果
- 修复源列表404找不到错误，这意味着您现在应该能够通过运行命令 sudo apt-get更新来修补系统，因此可以安装任何缺失或损坏的包裹（未完成依赖关系）只需运行命令 sudo apt -get -f install