老狗——Linux換源（APT\YUM\PIP\CONDA）

一、APT

#首先查看自己的 ubuntu系統的 codename，直接導致你更新的源是否對你的系統起效果，查看方法：
lsb_release -a
# 將原有的源文件複製保存
sudo cp /etc/apt/source.list /etc/apt/source.list.bak     
# 打開源文件  
sudo gedit /etc/apt/source.list [推薦]
sudo vim /etc/apt/source.list                       
# 將下列的複製到文件中，下面の vivid 應該是你的 codename
deb http://mirrors.aliyun.com/ubuntu/ vivid main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ vivid-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ vivid-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ vivid-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ vivid-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ vivid main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ vivid-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ vivid-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ vivid-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ vivid-backports main restricted universe multiverse
# 更新 APT
sudo apt update     
sudo apt upgrade

二、YUM

# 複製原有的源文件
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bakup  
# 通過wget獲取阿里雲的源文件
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
 # 清除緩存
yum clean all
# 生成緩存
yum makecache

三、PIP

mkdir .pip              #目標目錄下創建.pip文件
sudo vim .pip/pip.conf  #創建pip.conf文件
#將下面的寫入文件中 
    [global]
        index-url = http://mirrors.aliyun.com/pypi/simple/
    [install] 
        trusted-host=mirrors.aliyun.com

四、Conda

# 清華：
channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - defaults
show_channel_urls: true
ssl_verify: false
report_errors: false

# 中科大：
channels:
  - https://mirrors.ustc.edu.cn/anaconda/pkgs/main/
  - https://mirrors.ustc.edu.cn/anaconda/cloud/conda-forge/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - defaults
show_channel_urls: true

五、小貼士

換源之前測試一下虛擬機是不是正常聯網了，別和個呆吊一樣換了半天還是不行。
推薦使用火狐訪問 https://blog.csdn.net/weixin_42274953 來測試！