Ubuntu下gcc安装及使用

Ubuntu下gcc安装及使用

• sudo apt update报错
• sudo apt update
• 命中:1 http://packages.microsoft.com/repos/vscode stable InRelease
• 命中:2 http://ppa.launchpad.net/elementary-os/stable/ubuntu bionic InRelease
• 获取:3 http://packages.elementary.io/appcenter bionic InRelease [5,894 B]
• 命中:4 http://ppa.launchpad.net/elementary-os/os-patches/ubuntu bionic InRelease
• 获取:5 http://packages.elementary.io/appcenter bionic/main amd64 DEP-11 Metadata [93.6 kB]
• 命中:6 http://security.ubuntu.com/ubuntu bionic-security InRelease
• 错误:7 http://cn.archive.ubuntu.com/ubuntu bionic InRelease
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::19) 的连接 - connect (101: 网络不可达)
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::16) 的连接 - connect (101: 网络不可达)
• 无法连接上 cn.archive.ubuntu.com:80 (91.189.91.26)，连接超时 无法连接上 cn.archive.ubuntu.com:80 (91.189.91.23)，连接超时 [IP: 91.189.91.23 80]
• 错误:8 http://cn.archive.ubuntu.com/ubuntu bionic-updates InRelease
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::19) 的连接 - connect (101: 网络不可达)
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::16) 的连接 - connect (101: 网络不可达) [IP: 91.189.91.23 80]
• 错误:9 http://cn.archive.ubuntu.com/ubuntu bionic-backports InRelease
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::19) 的连接 - connect (101: 网络不可达)
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::16) 的连接 - connect (101: 网络不可达) [IP: 91.189.91.23 80] 已下载 99.5 kB，耗时 1分 4秒 (1,552 B/s)
• 正在读取软件包列表... 完成 正在分析软件包的依赖关系树
• 正在读取状态信息... 完成
• 有 3 个软件包可以升级。请执行 ‘apt list --upgradable’ 来查看它们。
• W: 无法下载 http://cn.archive.ubuntu.com/ubuntu/dists/bionic/InRelease 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::19) 的连接 - connect (101: 网络不可达)
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::16) 的连接 - connect (101: 网络不可达)
• 无法连接上 cn.archive.ubuntu.com:80 (91.189.91.26)，连接超时 无法连接上 cn.archive.ubuntu.com:80 (91.189.91.23)，连接超时 [IP: 91.189.91.23 80]
• W: 无法下载 http://cn.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::19) 的连接 - connect (101: 网络不可达)
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::16) 的连接 - connect (101: 网络不可达) [IP: 91.189.91.23 80]
• W: 无法下载 http://cn.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::19) 的连接 - connect (101: 网络不可达)
• 无法发起与 cn.archive.ubuntu.com:80 (2001:67c:1562::16) 的连接 - connect (101: 网络不可达) [IP: 91.189.91.23 80]
• W: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。
• 这是因为cn.archive.ubuntu.com被墙了，无法连接,
• 需要切换到国内源.
• 首先备份源列表:
• sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup
• 而后用gedit或其他编辑器打开:
• sudo gedit /etc/apt/sources.list
• #添加阿里源
  deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
  deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
  deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
  deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
  deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
  deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
  deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
  deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
  deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
  deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

• 最后执行如下命令更新源
  ##更新
  sudo apt-get update
  sudo apt-get upgrade

  另外其他几个国内源如下：
  中科大源
  ##中科大源
  deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
  deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
  deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
  deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
  deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
  deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
  deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
  deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
  deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
  deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

  163源
  ##163源
  deb http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse
  deb http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse
  deb http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse
  deb http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse
  deb http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse
  deb-src http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse
  deb-src http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse
  deb-src http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse
  deb-src http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse
  deb-src http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse

  清华源
  ##清华源
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

• 将cn.archive.ubuntu.com替换为阿里源mirrors.aliyun.com
• 然后，刷新列表:
• sudo apt-get update
• 几个国内源
• //阿里源http://mirrors.aliyun.com
• //中科大源http://mirrors.ustc.edu.cn
• //163源http://mirrors.163.com
• //清华源http://mirrors.tuna.tsinghua.edu.cn
• Ubuntu下gcc安装及使用
• 一、安装
• 方法一：
• sudo apt-get build-dep gcc
• 方法二：
• sudo apt-get install build-essential
• 安装完了可以执行如下的命令来查看版本，
• gcc --version
• 输出如下：
• gcc(GCC)4.2.3(Ubuntu4.2.3-2ubuntu7)
• Copyright(C)2007FreeSoftwareFoundation,Inc.