国内常用源开发环境换源(flutter换源，python换源，Linux换源，npm换源)

flutter换源

使用环境变量:PUB_HOSTED_URL FLUTTER_STORAGE_BASE_URL，

upgrade出问题时可能会提示设置FLUTTER_GIT_URL变量。

flutter中国

PUB_HOSTED_URL=https://pub.flutter-io.cn
FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
FLUTTER_GIT_URL=https://github.com/flutter/flutter.git
 
 
或者
 
 
FLUTTER_STORAGE_BASE_URL=https://mirrors.tuna.tsinghua.edu.cn/flutter
PUB_HOSTED_URL=https://mirrors.tuna.tsinghua.edu.cn/dart-pub
FLUTTER_GIT_URL=https://mirrors.tuna.tsinghua.edu.cn/git/flutter-sdk.git

更新命令：

flutter upgrade

注：更换环境变量后 重启 或 注销用户后生效。

gradle

文件：build.gradle

highlighter- Dart

// 阿里源
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }

Python换源

Anacoda换源

两种方法：

使用命令

安装后，打开命令行工具，使用如下命令

highlighter- Dart

conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
# 设置搜索时显示通道地址
conda config --set show_channel_urls yes

修改文件

在个人用户文件夹（一般都在C盘，用户文件夹下你用户名命名的一个文件夹），修改.condarc文件,该成如下内容：

highlighter- Dart

channels:
  - defaults
show_channel_urls: true
default_channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/msys2
custom_channels:
  conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  msys2: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  bioconda: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  menpo: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud

运行conda clean -i清除索引缓存，保证用的是镜像站提供的索引。

Linux换源

Kali换源

修改：/etc/apt/sources.list 文件，新增如下内容：

shell

#阿里云
deb http://mirrors.aliyun.com/kali kali-rolling main non-free contrib
deb-src http://mirrors.aliyun.com/kali kali-rolling main non-free contrib

#清华大学
deb http://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free
deb-src https://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free

#浙江大学
deb http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free
deb-src http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free

更新命令：

highlighter- Dart

apt-get clean && apt-get update && apt-get upgrade -y && apt-get dist-upgrade -y

Ubuntu换源

修改 etc/apt/sources.list 内容，添加以下内容：

highlighter- Dart

# 阿里云源
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src 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-backports main restricted universe multiverse

更新命令：

highlighter- Dart

sudo apt-get update

npm换源

淘宝npm：http://registry.npm.taobao.org
淘宝新npm源：https://registry.npmmirror.com/
淘宝npm web站：https://npmmirror.com/

永久使用：

npm config set registry https://registry.npmmirror.com/
# 验证
npm config get registry

使用nrm

全局安装nrm

npm install -g nrm

然后就可以使用 nrm ls查看可以使用的镜像源：

使用nrm use就能切换源：

使用cnpm

npm install -g cnpm --registry=https://registry.npmmirror.com

临时一用

npm --registry https://registry.npmmirror.com install express