如何修改下载软件源

1.修改linux下载源(ubuntu)

1. 备份原始文件

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup

2. 修改文件并添加国内源

vi /etc/apt/sources.list

3. 注释原文件内的源并添加如下地址

#阿里云
deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse  #网易163
deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

1.1.centos下修改软件源（修改为阿里云下载源）

1. 备份本地yum源

 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak 

2.获取阿里yum源配置文件

将https://mirrors.tuna.tsinghua.edu.cn/help/centos/  中的内容粘贴到CentOS-Base.repo

3.更新cache

yum  clean   all

yum makecache 

4.查看

yum -y update 

2.修改pip源

推荐两个源：

豆瓣：pypi.douban.com/simple/

清华：pypi.tuna.tsinghua.edu.cn/simple

1.临时使用

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pandas

2.永久修改

Linux下，修改~/.pip/pip.conf(或者创建一个),将index-url变量修改为所要更换的源地址:

[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple

windows下，在user目录中创建一个pip目录,如C:\Users\xx\pip，新建文件pip.ini,内容如下：

[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple

3.修改anaconda源

# conda
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/

conda config --set show_channel_urls yes