cnpm的介绍：
http://npm.taobao.org/这是一个完整 npmjs.org 镜像，你可以用此代替官方版本(只读)，同步频率目前为 10分钟 一次以保证尽量与官方服务同步。
cnpm的配置：
alias cnpm="npm --registry=https://registry.npm.taobao.org \
--cache=$HOME/.npm/.cache/cnpm \
--disturl=https://npm.taobao.org/dist \
--userconfig=$HOME/.cnpmrc"
问题：
默认的配置+npm，没有问题：
$ npm config list -l
; cli configs
long = true
user-agent = "npm/2.14.12 node/v4.3.1 win32 x64"
; userconfig C:\Users\xxx\.npmrc
cache = "D:\\nodejs\\node_cache"
prefix = "D:\\nodejs\\node_global"
; builtin config undefined
; prefix = "C:\\Users\\xxx\\AppData\\Roaming\\npm" (overridden)
; default values
access = null
always-auth = false
bin-links = true
browser = null
ca = null
; cache = "C:\\Users\\xxx\\AppData\\Roaming\\npm-cache" (overridden)
cache-lock-retries = 10
cache-lock-stale = 60000
cache-lock-wait = 10000
cache-max = null
cache-min = 10
cafile = undefined
cert = null
color = true
depth = null
description = true
dev = false
editor = "notepad.exe"
engine-strict = false
fetch-retries = 2
fetch-retry-factor = 10
fetch-retry-maxtimeout = 60000
fetch-retry-mintimeout = 10000
force = false
git = "git"
git-tag-version = true
global = false
globalconfig = "D:\\nodejs\\node_global\\etc\\npmrc"
globalignorefile = "D:\\nodejs\\node_global\\etc\\npmignore"
group = 0
heading = "npm"
https-proxy = null
if-present = false
ignore-scripts = false
init-author-email = ""
init-author-name = ""
init-author-url = ""
init-license = "ISC"
init-module = "C:\\Users\\xxx\\.npm-init.js"
init-version = "1.0.0"
json = false
key = null
link = false
local-address = undefined
loglevel = "warn"
; long = false (overridden)
message = "%s"
node-version = "4.3.1"
npat = false
onload-script = null
optional = true
parseable = false
; prefix = "D:\\nodejs" (overridden)
production = false
proprietary-attribs = true
proxy = null
rebuild-bundle = true
registry = "https://registry.npmjs.org/"
rollback = true
save = false
save-bundle = false
save-dev = false
save-exact = false
save-optional = false
save-prefix = "^"
scope = ""
searchexclude = null
searchopts = ""
searchsort = "name"
shell = "C:\\Windows\\system32\\cmd.exe"
shrinkwrap = true
sign-git-tag = false
spin = true
strict-ssl = true
tag = "latest"
tag-version-prefix = "v"
tmp = "D:\\cygwin64\\tmp"
umask = 0
unicode = true
unsafe-perm = true
usage = false
user = 0
; user-agent = "npm/{npm-version} node/{node-version} {platform} {arch}" (overridden)
userconfig = "C:\\Users\\xxx\\.npmrc"
version = false
versions = false
viewer = "browser"
但是自己配置node环境变量+cnpm就会出现问题。
$ cnpm config list -l
; cli configs
cache = "D:\\home\\xxx\\.npm\\.cache\\cnpm"
disturl = "https://npm.taobao.org/dist"
long = true
registry = "https://registry.npm.taobao.org/"
user-agent = "npm/2.14.12 node/v4.3.1 win32 x64"
userconfig = "D:\\home\\xxx\\.cnpmrc"
; builtin config undefined
prefix = "C:\\Users\\xxx\\AppData\\Roaming\\npm"
; default values
access = null
always-auth = false
bin-links = true
browser = null
ca = null
; cache = "C:\\Users\\xxx\\AppData\\Roaming\\npm-cache" (overridden)
cache-lock-retries = 10
cache-lock-stale = 60000
cache-lock-wait = 10000
cache-max = null
cache-min = 10
cafile = undefined
cert = null
color = true
depth = null
description = true
dev = false
editor = "notepad.exe"
engine-strict = false
fetch-retries = 2
fetch-retry-factor = 10
fetch-retry-maxtimeout = 60000
fetch-retry-mintimeout = 10000
force = false
git = "git"
git-tag-version = true
global = false
globalconfig = "C:\\Users\\xxx\\AppData\\Roaming\\npm\\etc\\npmrc"
globalignorefile = "C:\\Users\\xxx\\AppData\\Roaming\\npm\\etc\\npmignore"
group = 0
heading = "npm"
https-proxy = null
if-present = false
ignore-scripts = false
init-author-email = ""
init-author-name = ""
init-author-url = ""
init-license = "ISC"
init-module = "C:\\Users\\xxx\\.npm-init.js"
init-version = "1.0.0"
json = false
key = null
link = false
local-address = undefined
loglevel = "warn"
; long = false (overridden)
message = "%s"
node-version = "4.3.1"
npat = false
onload-script = null
optional = true
parseable = false
; prefix = "D:\\nodejs" (overridden)
production = false
proprietary-attribs = true
proxy = null
rebuild-bundle = true
; registry = "https://registry.npmjs.org/" (overridden)
rollback = true
save = false
save-bundle = false
save-dev = false
save-exact = false
save-optional = false
save-prefix = "^"
scope = ""
searchexclude = null
searchopts = ""
searchsort = "name"
shell = "C:\\Windows\\system32\\cmd.exe"
shrinkwrap = true
sign-git-tag = false
spin = true
strict-ssl = true
tag = "latest"
tag-version-prefix = "v"
tmp = "D:\\cygwin64\\tmp"
umask = 0
unicode = true
unsafe-perm = true
usage = false
user = 0
; user-agent = "npm/{npm-version} node/{node-version} {platform} {arch}" (overridden)
; userconfig = "C:\\Users\\xxx\\.npmrc" (overridden)
version = false
versions = false
viewer = "browser"
其中：
userconfig = "C:\\Users\\xxx\\.npmrc"
此文件的内容为自己的配置：
prefix=D:\nodejs\node_global cache=D:\nodejs\node_cache
原因： 配置的参数，在win下出现了问题：
alias cnpm="npm --registry=https://registry.npm.taobao.org \
--cache=$HOME/.npm/.cache/cnpm \
--disturl=https://npm.taobao.org/dist \
--userconfig=$HOME/.cnpmrc"
cache指定了，没有考虑用户自己配置的情况。
userconfig也指定了，同上。
解决方法：
去掉这俩参数。重新试了一下，好了~~
注意事项：
默认安装win下的node，会配置用户的环境变量，指向node_global目录。
若自己改了默认配置，需要指定环境变量啊。
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