Ubuntu14.04 运行Update总是报错，换软件源也没用，跪求解决方法

为什么有ros。org的那个源，禁用掉那行

sudo gedit /etc/apt/sources.list
在ros.org那行最前面加#

另外，你在国内的话可以换国内的源

終端機指令及回應文字
請直接複製貼上來
不必擷圖 以利直接引用

您好，我换成国内的源了，但运行sudo gedit /etc/apt/sources.list后，在sources.list清单中找不到ros.org哪一行命令，这是为何？？

谢谢提醒，想复制粘贴来着，我装的是虚拟机，试了一些方法粘贴不了，请问你有好的方法吗？？

现在还有那个出错信息么？没有的话就不管了，

例如 virtualbox 安裝 guest additions 以後 就可以

sudo ls -Al /etc/apt/sources.list.d
把結果複製貼上來

shiqi@shiqi:~$ sudo apt-get update
[sudo] password for shiqi:
Ign http://mirrors.ustc.edu.cn trusty InRelease
Get:1 http://mirrors.ustc.edu.cn trusty-updates InRelease [65.9 kB]
Get:2 http://mirrors.ustc.edu.cn trusty-backports InRelease [65.9 kB]
Get:3 http://mirrors.ustc.edu.cn trusty-security InRelease [65.9 kB]
Hit http://mirrors.ustc.edu.cn trusty Release.gpg
Get:4 http://mirrors.ustc.edu.cn trusty-updates/main Sources [391 kB]
Ign http://extras.ubuntu.com trusty InRelease
Ign http://packages.ros.org truty InRelease
Ign http://packages.ros.org truty Release.gpg
Get:5 http://extras.ubuntu.com trusty Release.gpg [72 B]
Ign http://packages.ros.org truty Release
Hit http://extras.ubuntu.com trusty Release
Hit http://extras.ubuntu.com trusty/main Sources
Hit http://extras.ubuntu.com trusty/main amd64 Packages
Hit http://extras.ubuntu.com trusty/main i386 Packages
Get:6 http://mirrors.ustc.edu.cn trusty-updates/restricted Sources [5,911 B]
Get:7 http://mirrors.ustc.edu.cn trusty-updates/universe Sources [173 kB]
Get:8 http://mirrors.ustc.edu.cn trusty-updates/multiverse Sources [7,535 B]
Get:9 http://mirrors.ustc.edu.cn trusty-updates/main amd64 Packages [947 kB]
Ign http://extras.ubuntu.com trusty/main Translation-en_US
Ign http://extras.ubuntu.com trusty/main Translation-en
Ign http://extras.ubuntu.com trusty/main Translation-zh_CN
Err http://packages.ros.org truty/main amd64 Packages
404 Not Found [IP: 140.211.166.134 80]
Err http://packages.ros.org truty/main i386 Packages
404 Not Found [IP: 140.211.166.134 80]
Get:10 http://mirrors.ustc.edu.cn trusty-updates/restricted amd64 Packages [16.4 kB]
Ign http://packages.ros.org truty/main Translation-en_US
Get:11 http://mirrors.ustc.edu.cn trusty-updates/universe amd64 Packages [398 kB]
Ign http://packages.ros.org truty/main Translation-en
Ign http://packages.ros.org truty/main Translation-zh_CN
Get:12 http://mirrors.ustc.edu.cn trusty-updates/multiverse amd64 Packages [14.0 kB]
Get:13 http://mirrors.ustc.edu.cn trusty-updates/main i386 Packages [908 kB]
Get:14 http://mirrors.ustc.edu.cn trusty-updates/restricted i386 Packages [16.2 kB]
Get:15 http://mirrors.ustc.edu.cn trusty-updates/universe i386 Packages [399 kB]
Get:16 http://mirrors.ustc.edu.cn trusty-updates/multiverse i386 Packages [14.4 kB]
Get:17 http://mirrors.ustc.edu.cn trusty-updates/main Translation-en [467 kB]
Get:18 http://mirrors.ustc.edu.cn trusty-updates/multiverse Translation-en [7,340 B]
Get:19 http://mirrors.ustc.edu.cn trusty-updates/restricted Translation-en [3,847 B]
Get:20 http://mirrors.ustc.edu.cn trusty-updates/universe Translation-en [211 kB]
Get:21 http://mirrors.ustc.edu.cn trusty-backports/main Sources [9,652 B]
Get:22 http://mirrors.ustc.edu.cn trusty-backports/restricted Sources [28 B]
Get:23 http://mirrors.ustc.edu.cn trusty-backports/universe Sources [35.3 kB]
Get:24 http://mirrors.ustc.edu.cn trusty-backports/multiverse Sources [1,898 B]
Get:25 http://mirrors.ustc.edu.cn trusty-backports/main amd64 Packages [13.3 kB]
Get:26 http://mirrors.ustc.edu.cn trusty-backports/restricted amd64 Packages [28 B]
Get:27 http://mirrors.ustc.edu.cn trusty-backports/universe amd64 Packages [43.2 kB]
Get:28 http://mirrors.ustc.edu.cn trusty-backports/multiverse amd64 Packages [1,571 B]
Get:29 http://mirrors.ustc.edu.cn trusty-backports/main i386 Packages [13.3 kB]
Get:30 http://mirrors.ustc.edu.cn trusty-backports/restricted i386 Packages [28 B]
Get:31 http://mirrors.ustc.edu.cn trusty-backports/universe i386 Packages [43.3 kB]
Get:32 http://mirrors.ustc.edu.cn trusty-backports/multiverse i386 Packages [1,552 B]
Get:33 http://mirrors.ustc.edu.cn trusty-backports/main Translation-en [7,493 B]
Get:34 http://mirrors.ustc.edu.cn trusty-backports/multiverse Translation-en [1,215 B]
Get:35 http://mirrors.ustc.edu.cn trusty-backports/restricted Translation-en [28 B]
Get:36 http://mirrors.ustc.edu.cn trusty-backports/universe Translation-en [36.8 kB]
Get:37 http://mirrors.ustc.edu.cn trusty-security/main Sources [125 kB]
Get:38 http://mirrors.ustc.edu.cn trusty-security/restricted Sources [4,637 B]
Get:39 http://mirrors.ustc.edu.cn trusty-security/universe Sources [49.6 kB]
Get:40 http://mirrors.ustc.edu.cn trusty-security/multiverse Sources [3,194 B]
Get:41 http://mirrors.ustc.edu.cn trusty-security/main amd64 Packages [580 kB]
Get:42 http://mirrors.ustc.edu.cn trusty-security/restricted amd64 Packages [13.4 kB]
Get:43 http://mirrors.ustc.edu.cn trusty-security/universe amd64 Packages [152 kB]
Get:44 http://mirrors.ustc.edu.cn trusty-security/multiverse amd64 Packages [4,139 B]
Get:45 http://mirrors.ustc.edu.cn trusty-security/main i386 Packages [540 kB]
Get:46 http://mirrors.ustc.edu.cn trusty-security/restricted i386 Packages [13.1 kB]
Get:47 http://mirrors.ustc.edu.cn trusty-security/universe i386 Packages [152 kB]
Get:48 http://mirrors.ustc.edu.cn trusty-security/multiverse i386 Packages [4,278 B]
Get:49 http://mirrors.ustc.edu.cn trusty-security/main Translation-en [320 kB]
Get:50 http://mirrors.ustc.edu.cn trusty-security/multiverse Translation-en [2,201 B]
Get:51 http://mirrors.ustc.edu.cn trusty-security/restricted Translation-en [3,357 B]
Get:52 http://mirrors.ustc.edu.cn trusty-security/universe Translation-en [89.1 kB]
Hit http://mirrors.ustc.edu.cn trusty Release
Hit http://mirrors.ustc.edu.cn trusty/main Sources
Hit http://mirrors.ustc.edu.cn trusty/restricted Sources
Hit http://mirrors.ustc.edu.cn trusty/universe Sources
Hit http://mirrors.ustc.edu.cn trusty/multiverse Sources
Hit http://mirrors.ustc.edu.cn trusty/main amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/restricted amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/universe amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/multiverse amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/main i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/restricted i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/universe i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/multiverse i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/main Translation-en
Hit http://mirrors.ustc.edu.cn trusty/main Translation-zh_CN
Hit http://mirrors.ustc.edu.cn trusty/multiverse Translation-en
Hit http://mirrors.ustc.edu.cn trusty/multiverse Translation-zh_CN
Hit http://mirrors.ustc.edu.cn trusty/restricted Translation-en
Hit http://mirrors.ustc.edu.cn trusty/restricted Translation-zh_CN
Hit http://mirrors.ustc.edu.cn trusty/universe Translation-en
Hit http://mirrors.ustc.edu.cn trusty/universe Translation-zh_CN
Ign http://mirrors.ustc.edu.cn trusty/main Translation-en_US
Ign http://mirrors.ustc.edu.cn trusty/multiverse Translation-en_US
Ign http://mirrors.ustc.edu.cn trusty/restricted Translation-en_US
Ign http://mirrors.ustc.edu.cn trusty/universe Translation-en_US
Fetched 6,443 kB in 51s (124 kB/s)
W: Failed to fetch http://packages.ros.org/ros/ubuntu/dist ... 4/Packages 404 Not Found [IP: 140.211.166.134 80]

W: Failed to fetch http://packages.ros.org/ros/ubuntu/dist ... 6/Packages 404 Not Found [IP: 140.211.166.134 80]

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

出错信息还是一样的，这是运行结果

shiqi@shiqi:~$ sudo apt-get update
[sudo] password for shiqi:
Ign http://mirrors.ustc.edu.cn trusty InRelease
Get:1 http://mirrors.ustc.edu.cn trusty-updates InRelease [65.9 kB]
Get:2 http://mirrors.ustc.edu.cn trusty-backports InRelease [65.9 kB]
Get:3 http://mirrors.ustc.edu.cn trusty-security InRelease [65.9 kB]
Hit http://mirrors.ustc.edu.cn trusty Release.gpg
Get:4 http://mirrors.ustc.edu.cn trusty-updates/main Sources [391 kB]
Ign http://extras.ubuntu.com trusty InRelease
Ign http://packages.ros.org truty InRelease
Ign http://packages.ros.org truty Release.gpg
Get:5 http://extras.ubuntu.com trusty Release.gpg [72 B]
Ign http://packages.ros.org truty Release
Hit http://extras.ubuntu.com trusty Release
Hit http://extras.ubuntu.com trusty/main Sources
Hit http://extras.ubuntu.com trusty/main amd64 Packages
Hit http://extras.ubuntu.com trusty/main i386 Packages
Get:6 http://mirrors.ustc.edu.cn trusty-updates/restricted Sources [5,911 B]
Get:7 http://mirrors.ustc.edu.cn trusty-updates/universe Sources [173 kB]
Get:8 http://mirrors.ustc.edu.cn trusty-updates/multiverse Sources [7,535 B]
Get:9 http://mirrors.ustc.edu.cn trusty-updates/main amd64 Packages [947 kB]
Ign http://extras.ubuntu.com trusty/main Translation-en_US
Ign http://extras.ubuntu.com trusty/main Translation-en
Ign http://extras.ubuntu.com trusty/main Translation-zh_CN
Err http://packages.ros.org truty/main amd64 Packages
404 Not Found [IP: 140.211.166.134 80]
Err http://packages.ros.org truty/main i386 Packages
404 Not Found [IP: 140.211.166.134 80]
Get:10 http://mirrors.ustc.edu.cn trusty-updates/restricted amd64 Packages [16.4 kB]
Ign http://packages.ros.org truty/main Translation-en_US
Get:11 http://mirrors.ustc.edu.cn trusty-updates/universe amd64 Packages [398 kB]
Ign http://packages.ros.org truty/main Translation-en
Ign http://packages.ros.org truty/main Translation-zh_CN
Get:12 http://mirrors.ustc.edu.cn trusty-updates/multiverse amd64 Packages [14.0 kB]
Get:13 http://mirrors.ustc.edu.cn trusty-updates/main i386 Packages [908 kB]
Get:14 http://mirrors.ustc.edu.cn trusty-updates/restricted i386 Packages [16.2 kB]
Get:15 http://mirrors.ustc.edu.cn trusty-updates/universe i386 Packages [399 kB]
Get:16 http://mirrors.ustc.edu.cn trusty-updates/multiverse i386 Packages [14.4 kB]
Get:17 http://mirrors.ustc.edu.cn trusty-updates/main Translation-en [467 kB]
Get:18 http://mirrors.ustc.edu.cn trusty-updates/multiverse Translation-en [7,340 B]
Get:19 http://mirrors.ustc.edu.cn trusty-updates/restricted Translation-en [3,847 B]
Get:20 http://mirrors.ustc.edu.cn trusty-updates/universe Translation-en [211 kB]
Get:21 http://mirrors.ustc.edu.cn trusty-backports/main Sources [9,652 B]
Get:22 http://mirrors.ustc.edu.cn trusty-backports/restricted Sources [28 B]
Get:23 http://mirrors.ustc.edu.cn trusty-backports/universe Sources [35.3 kB]
Get:24 http://mirrors.ustc.edu.cn trusty-backports/multiverse Sources [1,898 B]
Get:25 http://mirrors.ustc.edu.cn trusty-backports/main amd64 Packages [13.3 kB]
Get:26 http://mirrors.ustc.edu.cn trusty-backports/restricted amd64 Packages [28 B]
Get:27 http://mirrors.ustc.edu.cn trusty-backports/universe amd64 Packages [43.2 kB]
Get:28 http://mirrors.ustc.edu.cn trusty-backports/multiverse amd64 Packages [1,571 B]
Get:29 http://mirrors.ustc.edu.cn trusty-backports/main i386 Packages [13.3 kB]
Get:30 http://mirrors.ustc.edu.cn trusty-backports/restricted i386 Packages [28 B]
Get:31 http://mirrors.ustc.edu.cn trusty-backports/universe i386 Packages [43.3 kB]
Get:32 http://mirrors.ustc.edu.cn trusty-backports/multiverse i386 Packages [1,552 B]
Get:33 http://mirrors.ustc.edu.cn trusty-backports/main Translation-en [7,493 B]
Get:34 http://mirrors.ustc.edu.cn trusty-backports/multiverse Translation-en [1,215 B]
Get:35 http://mirrors.ustc.edu.cn trusty-backports/restricted Translation-en [28 B]
Get:36 http://mirrors.ustc.edu.cn trusty-backports/universe Translation-en [36.8 kB]
Get:37 http://mirrors.ustc.edu.cn trusty-security/main Sources [125 kB]
Get:38 http://mirrors.ustc.edu.cn trusty-security/restricted Sources [4,637 B]
Get:39 http://mirrors.ustc.edu.cn trusty-security/universe Sources [49.6 kB]
Get:40 http://mirrors.ustc.edu.cn trusty-security/multiverse Sources [3,194 B]
Get:41 http://mirrors.ustc.edu.cn trusty-security/main amd64 Packages [580 kB]
Get:42 http://mirrors.ustc.edu.cn trusty-security/restricted amd64 Packages [13.4 kB]
Get:43 http://mirrors.ustc.edu.cn trusty-security/universe amd64 Packages [152 kB]
Get:44 http://mirrors.ustc.edu.cn trusty-security/multiverse amd64 Packages [4,139 B]
Get:45 http://mirrors.ustc.edu.cn trusty-security/main i386 Packages [540 kB]
Get:46 http://mirrors.ustc.edu.cn trusty-security/restricted i386 Packages [13.1 kB]
Get:47 http://mirrors.ustc.edu.cn trusty-security/universe i386 Packages [152 kB]
Get:48 http://mirrors.ustc.edu.cn trusty-security/multiverse i386 Packages [4,278 B]
Get:49 http://mirrors.ustc.edu.cn trusty-security/main Translation-en [320 kB]
Get:50 http://mirrors.ustc.edu.cn trusty-security/multiverse Translation-en [2,201 B]
Get:51 http://mirrors.ustc.edu.cn trusty-security/restricted Translation-en [3,357 B]
Get:52 http://mirrors.ustc.edu.cn trusty-security/universe Translation-en [89.1 kB]
Hit http://mirrors.ustc.edu.cn trusty Release
Hit http://mirrors.ustc.edu.cn trusty/main Sources
Hit http://mirrors.ustc.edu.cn trusty/restricted Sources
Hit http://mirrors.ustc.edu.cn trusty/universe Sources
Hit http://mirrors.ustc.edu.cn trusty/multiverse Sources
Hit http://mirrors.ustc.edu.cn trusty/main amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/restricted amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/universe amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/multiverse amd64 Packages
Hit http://mirrors.ustc.edu.cn trusty/main i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/restricted i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/universe i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/multiverse i386 Packages
Hit http://mirrors.ustc.edu.cn trusty/main Translation-en
Hit http://mirrors.ustc.edu.cn trusty/main Translation-zh_CN
Hit http://mirrors.ustc.edu.cn trusty/multiverse Translation-en
Hit http://mirrors.ustc.edu.cn trusty/multiverse Translation-zh_CN
Hit http://mirrors.ustc.edu.cn trusty/restricted Translation-en
Hit http://mirrors.ustc.edu.cn trusty/restricted Translation-zh_CN
Hit http://mirrors.ustc.edu.cn trusty/universe Translation-en
Hit http://mirrors.ustc.edu.cn trusty/universe Translation-zh_CN
Ign http://mirrors.ustc.edu.cn trusty/main Translation-en_US
Ign http://mirrors.ustc.edu.cn trusty/multiverse Translation-en_US
Ign http://mirrors.ustc.edu.cn trusty/restricted Translation-en_US
Ign http://mirrors.ustc.edu.cn trusty/universe Translation-en_US
Fetched 6,443 kB in 51s (124 kB/s)
W: Failed to fetch http://packages.ros.org/ros/ubuntu/dist ... 4/Packages 404 Not Found [IP: 140.211.166.134 80]

W: Failed to fetch http://packages.ros.org/ros/ubuntu/dist ... 6/Packages 404 Not Found [IP: 140.211.166.134 80]

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

另外，在更新软件源是就有报错如下：
W:Failed to fetch http://packages.ros.org/ros/ubuntu/dist ... 4/Packages 404 Not Found [IP: 140.211.166.134 80]
, W:Failed to fetch http://packages.ros.org/ros/ubuntu/dist ... 6/Packages 404 Not Found [IP: 140.211.166.134 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.

贴上来

404的这里http://packages.ros.org/ros/ubuntu/dists/truty/main/binary-amd64/Packages

应该是trusty，少了个s

shiqi@shiqi:~$ cat /etc/issue
Ubuntu 14.04.1 LTS \n \l

shiqi@shiqi:~$ cat /etc/apt/sources.list
# deb cdrom:[Ubuntu 14.04.1 LTS _Trusty Tahr_ - Release amd64 (20140722.2)]/ trusty main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty main restricted
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates main restricted
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty universe
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty universe
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates universe
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse

deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-security main restricted
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-security main restricted
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-security universe
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-security universe
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-security multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu trusty partner
# deb-src http://archive.canonical.com/ubuntu trusty partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu trusty main
deb-src http://extras.ubuntu.com/ubuntu trusty main
shiqi@shiqi:~$ cat /etc/apt/sources.list.d/*
deb http://packages.ros.org/ros/ubuntu truty main
deb http://packages.ros.org/ros/ubuntu truty main
shiqi@shiqi:~$

应该是trusty，少了个s，修改下

如果这个源不是第三方软件专有源的话，可以禁用

请问如何修改或是禁用？？