UbuntuDuplicate sources.list在sudo apt get install scala上出现输入错误

我正在尝试安装scala，并在键入以下内容时一直遇到此错误：

sudo apt-get install scala

我有以下错误：

W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main amd64 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-amd64_Packages)
W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main i386 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-i386_Packages)
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/toolbelt.heroku.com_ubuntu_._en
E: The package lists or status file could not be parsed or opened.

我按照这些说明来修复它，但它不起作用

这是我的sources.list文件

# deb cdrom:[Ubuntu 12.04.2 LTS _Precise Pangolin_ - Release amd64 (20130213)]/dists/precise/main/binary-i386/

# deb cdrom:[Ubuntu 12.04.2 LTS _Precise Pangolin_ - Release amd64 (20130213)]/ dists/precise/restricted/binary-i386/
# deb cdrom:[Ubuntu 12.04.2 LTS _Precise Pangolin_ - Release amd64 (20130213)]/ precise main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ precise main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-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://us.archive.ubuntu.com/ubuntu/ precise universe
deb-src http://us.archive.ubuntu.com/ubuntu/ precise universe
deb http://us.archive.ubuntu.com/ubuntu/ precise-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-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://us.archive.ubuntu.com/ubuntu/ precise multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ precise multiverse
deb http://us.archive.ubuntu.com/ubuntu/ precise-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-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://us.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse

deb src精确后端口主受限宇宙多重宇宙

deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
deb http://security.ubuntu.com/ubuntu precise-security universe
deb-src http://security.ubuntu.com/ubuntu precise-security universe
deb http://security.ubuntu.com/ubuntu precise-security multiverse
deb-src http://security.ubuntu.com/ubuntu precise-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 precise partner
deb-src http://archive.canonical.com/ubuntu precise 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 precise main
deb-src http://extras.ubuntu.com/ubuntu precise main

---

启动终端并键入：

gksu gedit

然后键入

open /etc/apt/sources.list.d/ 

然后寻找合适的条目，据说是重复的

检查它们是否相同，如果相同，请在重复条目前输入一个

#

然后将文件保存在另一个终端中

---

sudo apt get update

检查错误是否消失。

此解决方案与我一起工作

首先删除重复的source

sudorm/etc/apt/sources.list.d/google.list

然后

sudo-apt-update

和

sudo-apt-update

---

因为在ubuntu中运行python很容易。您可以使用下面的python3脚本制作文件的副本，而不复制副本。之后，您可以用新文件替换旧的“sources.list”

l = set()
# remove duplicates by adding all the lines to a set
with open("/etc/apt/sources.list") as f:
    for line in f:
        l.add(line)
# write the new lines to a file in your home folder
with open("/home/brianbrix/sources.list", "w") as f:
    for line in l:
        f.write(line)
        f.write("\n")

# after that you can replace the sources file wwith the new one which has no duplicates

---

在将其替换为新文件之前，不要忘记创建原始“/etc/apt/sources.list”的备份