ubuntu 的 apt-get update 出現404錯誤時，或者添加ppa失敗時，ubuntu 版本也 end of life 了的解決方案

xmodulo.com/how-to-fix-apt-get-update-error-on-ubuntu.html

 

若是是依賴沒找到，能夠用 sudo apt-get install -f 先補齊依賴看行不行。

 

一、先使用：

$ sudo rm -rf /var/lib/apt/lists/*
$ sudo apt-get update 

若是不行，再使用：

二、

$ sudo rm -R /var/lib/apt/lists/partial/*
$ sudo apt-get update 

若是還不行，則

三、

Then check out the "End of Life" date of your Ubuntu release by referring to https://wiki.ubuntu.com/Releases

若是你的ubuntu版本已經 end of life了，則表示再也不被支持，即軟件庫、更新庫就不可用了

可是你能夠使用 old-releases：

ask.xmodulo.com/404-not-found-error-apt-get-update-ubuntu.html

 

Every Ubuntu release has its end-of-life (EOL) time; regular Ubuntu releases are supported for 18 months, while LTS (Long Term Support) versions are supported up to 3 years (server edition) and 5 years (desktop edition). Once a Ubuntu release has reached EOL, its repositories will no longer be accessible, and you won't get any maintenance updates and security patches from Canonical. As of this writing, Ubuntu 13.04 (Raring Ringtail) has already reached EOL.

If the Ubuntu system you are using is EOL-ed, you will get the following 404 errors from apt-get or aptitude as its repositories have been deprecated.

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/raring-backports/multiverse/binary-i386/Packages  404  Not Found [IP: 91.189.91.13 80]

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/raring/main/binary-amd64/Packages  404  Not Found

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/raring-security/universe/binary-i386/Packages  404  Not Found [IP: 91.189.88.149 80]

E: Some index files failed to download. They have been ignored, or old ones used instead

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/main/source/Sources  404  Not Found

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/restricted/source/Sources  404  Not Found

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/universe/source/Sources  404  Not Found

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/multiverse/source/Sources  404  Not Found

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/main/binary-amd64/Packages  404  Not Found

For those users who are using old versions of Ubuntu, Canonical maintains old-releases.ubuntu.com, which is an archive of EOL-ed repositories. Thus, when Canonical's support for your Ubuntu installation ends, you need to switch to repositories at old-releases.ubuntu.com (unless you want to upgrade it before EOL).

 

Here is a quick way to fix "404 Not Found" errors on old Ubuntu by switching to old-releases repositories.

First, replace main/security repositories with old-releases versions as follows.

$ sudo sed -i -r 's/([a-z]{2}\.)?archive.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
$ sudo sed -i -r 's/security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list 

Then open /etc/apt/sources.list with a text editor, and look for extras.ubuntu.com. This repository is also no longer supported for 13.04. So you need to comment out extras.ubuntu.com by prepending '#' sign.

#deb http://extras.ubuntu.com/ubuntu raring main
#deb-src http://extras.ubuntu.com/ubuntu raring main

Now you should be able to install or update packages on an old unsupported Ubuntu release.

 

四、大多數時候採用 sudo add-apt-repository  ***  添加的repo source，不少時候在 apt-get update 的時候都會失敗，能夠這樣刪掉剛添加的repo：

sudo add-apt-repository ppa:whatever/ppa
sudo apt-get update

....fail.....

sudo add-apt-repository --remove ppa:whatever/ppa