获取-安装错误失败

Question

我正在尝试进行更新和安装，并不断收到以下错误：

错误:1 http://security.ubuntu.com/ubuntu仿生-安全/宇宙amd64 cpp-8 amd64 8.3.0-6 ubuntu1~18.04.1

我需要做些什么来纠正这些错误？

以下是充分的尝试：

sudo apt install gcc-8
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  cpp-8 gcc-10-base gcc-9-base libasan5 libgcc-8-dev libgcc-s1 libubsan1
Suggested packages:
  gcc-8-locales gcc-8-multilib gcc-8-doc libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan5-dbg liblsan0-dbg libtsan0-dbg libubsan1-dbg
  libmpx2-dbg libquadmath0-dbg
The following NEW packages will be installed:
  cpp-8 gcc-10-base gcc-8 gcc-9-base libasan5 libgcc-8-dev libgcc-s1 libubsan1
0 upgraded, 8 newly installed, 0 to remove and 13 not upgraded.
Need to get 21.0 MB/21.6 MB of archives.
After this operation, 72.2 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Err:1 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 cpp-8 amd64 8.3.0-6ubuntu1~18.04.1
  404  Not Found [IP: 91.189.88.142 80]
Err:2 http://security.ubuntu.com/ubuntu bionic-security/main amd64 libgcc-8-dev amd64 8.3.0-6ubuntu1~18.04.1
  404  Not Found [IP: 91.189.88.142 80]
Err:3 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 gcc-8 amd64 8.3.0-6ubuntu1~18.04.1
  404  Not Found [IP: 91.189.88.142 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/g/gcc-8/cpp-8_8.3.0-6ubuntu1~18.04.1_amd64.deb  404  Not Found [IP: 91.189.88.142 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/g/gcc-8/libgcc-8-dev_8.3.0-6ubuntu1~18.04.1_amd64.deb  404  Not Found [IP: 91.189.88.142 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/g/gcc-8/gcc-8_8.3.0-6ubuntu1~18.04.1_amd64.deb  404  Not Found [IP: 91.189.88.142 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing
____________________________________________________________________________________

另外，滚动轮不起作用，但我不知道它是否与这个问题有关。

谢谢

Answer 1

正如404 not found所说，它意味着存储库信息已经过时。通过在终端上发出以下命令，您可以轻松地解决这个问题：

sudo apt update

现在，重新尝试安装您的软件包，安装过程将是顺利的。

Answer 2

您需要在安装之前通过执行sudo apt update来更新存储库数据。这就是：

1. sudo apt update。
2. sudo apt install gcc-8。

或者，您只需运行：

sudo apt update && sudo apt install gcc-8

注意:在安装之前总是执行更新是一个很好的做法。