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apt-get：没有这样的文件或目录

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apt-get：没有这样的文件或目录

我不知道为什么我突然不能用 apt-get 做某事，例如sudo apt-get update或sudo apt-get install blabla

这是输出uname -a：

Linux adelleodel-X450CC 3.16.0-30-generic #40~14.04.1-Ubuntu SMP Thu Jan 15 17:43:14 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

文件 apt-get：

apt-get: ERROR: cannot open `apt-get' (No such file or directory)

cat /etc/lsb-release：

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.3 LTS"

ls -l 在 /usr/bin/apt-get 中：

ls: cannot access /usr/bin/apt-get: No such file or directory

dpkg-l apt：

Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                          Version             Architecture        Description
+++-=============================-===================-===================-================================================================
rc  apt                           1.0.1ubuntu2.11     amd64               commandline package manager

回显 $PATH ：

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

我之前搜索过这个问题，有人说我必须下载一些东西然后 dpkg 一下。那该怎么办呢？有人可以提供链接并一步一步教我怎么做吗？非常感谢！！！！

-----编辑-----实际上，我确实这样做了sudo apt-get remove libusb-0.1-4:amd64，并且我认为一些包自动删除了它。我这样做是因为我认为它不属于我的程序，因为我有libusb-1.0-0:am​​d64，libusb-1.0-0-dev:amd64， 和libusb-1.0-文档

我试过了wget http://security.ubuntu.com/ubuntu/pool/main/a/apt/apt_1.0.1ubuntu2.11_amd64.deb

结果是：

--2016-02-08 19:56:19--  http://security.ubuntu.com/ubuntu/pool/main/a/apt/apt_1.0.1ubuntu2.11_amd64.deb
Resolving security.ubuntu.com (security.ubuntu.com)... 91.189.91.13, 91.189.92.200, 91.189.92.201, ...
Connecting to security.ubuntu.com (security.ubuntu.com)|91.189.91.13|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 952468 (930K) [application/x-debian-package]
Saving to: ‘apt_1.0.1ubuntu2.11_amd64.deb’

100%[======================================>] 952.468      245KB/s   in 3,8s   

2016-02-08 19:56:29 (245 KB/s) - ‘apt_1.0.1ubuntu2.11_amd64.deb’ saved [952468/952468]

在那之后，sudo dpkg -i apt_apt_1.0.1ubuntu2.11_amd64.deb

结果是：

dpkg: error processing archive apt_apt_1.0.1ubuntu2.11_amd64.deb (--install):
 cannot access archive: No such file or directory
Errors were encountered while processing:
 apt_apt_1.0.1ubuntu2.11_amd64.deb
adelleodel@adelleodel-X450CC:~$ sudo dpkg -i apt_1.0.1ubuntu2.11_amd64.deb
(Reading database ... 230272 files and directories currently installed.)
Preparing to unpack apt_1.0.1ubuntu2.11_amd64.deb ...
Unpacking apt (1.0.1ubuntu2.11) over (0.8.10.3+squeeze1) ...
dpkg: dependency problems prevent configuration of apt:
 apt depends on libstdc++6 (>= 4.6); however:
  Version of libstdc++6 on system is 4.4.5-8.
 apt depends on gnupg; however:
  Package gnupg is not installed.

dpkg: error processing package apt (--install):
 dependency problems - leaving unconfigured
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
Errors were encountered while processing:
 apt

答案1

你现在必须从以下位置下载 apt.deb 软件包到你的系统上： http://security.ubuntu.com/ubuntu/pool/main/a/apt/

打开终端（Ctrl-Alt-t）输入：

32 位：

wget http://security.ubuntu.com/ubuntu/pool/main/a/apt/apt_v_x_x_x_i386.deb

或者

64 位：

wget http://security.ubuntu.com/ubuntu/pool/main/a/apt/apt_v_x_x_x_amd64.deb

通过输入以下命令进行安装：

sudo dpkg -i  apt_apt_v_x_x_x_i386.deb

sudo dpkg -i  apt_apt_v_x_x_x_amd64.deb

或者

尝试从 Ubuntu 软件中心安装它。

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