两个问题：1.nodejs的安装使用Mac OS X Binaries (.tar.gz)（64位）来安装：http://www.nodejs.org/download/安装参照：http://blog.snowinmay.net/?p=41安装要点：1.1把之前的nodejs文件都清理掉：rm -r bin/node bin/node-waf include/node lib/node lib/pkgconfig/nodejs.pc share/man/man1/node.11.2解压文件到自己喜欢的目录（最好是系统默认的程序安装目录，这样不用写环境变量）我写的环境变量：export PATH="～/work/node/bin:$PATH"我这次安装nodejs出现问题是因为在复制文件的时候把bin文件夹中的文件多复制了一层：本来应该是这样的： Prince-2:node snowinmay$ lsChangeLogREADME.mdincludeshare LICENSEbinlibPrince-2:node snowinmay$ cd bin/Prince-2:bin snowinmay$ lsnodenpmnode和npm在bin中，我复制的时候把node和npm放在了bin/bin/下面，所以和环境变量对应不起来了。 2.npm的安装npm的出错分两次，
第一次是因为：curl https://npmjs.org/install.sh | sh 写错了，提示错误一直是：directory sh: line 2: syntax error near unexpected token<''h: line 2: `Prince-2:node snowinmay$ sudo npm install -g npmlog
正确的写法应该是：curl -0 -L http://npmjs.org/install.sh | sudo sh
运行之后提示：npm cannot be installed without nodejs.Install node first, and then try again.Maybe node is installed, but not in the PATH?Note that running as sudo can change envs.PATH=~/work/node/bin:/Users/snowinmay/.rvm/gems/ruby-2.0.0-p451/bin:/Users/snowinmay/.rvm/gems/ruby-2.0.0-p451@global/bin:/Users/snowinmay/.rvm/rubies/ruby-2.0.0-p451/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/snowinmay/.rvm/bin提示环境变量写错了，怪不得之前用：which node 和which npm都无效，看了一下环境变量文件：export PATH="～/work/node/bin:$PATH" 改成了：export PATH="$HOME/work/node/bin:$PATH"Prince-2:bin snowinmay$ which node/Users/snowinmay/work/node/bin/nodePrince-2:bin snowinmay$ which npm/Users/snowinmay/work/node/bin/npmPrince-2:bin snowinmay$ $PATH-bash: /Users/snowinmay/work/node/bin:/Users/snowinmay/work/node/bin:~/work/node/bin:/Users/snowinmay/.rvm/gems/ruby-2.0.0-p451/bin:/Users/snowinmay/.rvm/gems/ruby-2.0.0-p451@global/bin:/Users/snowinmay/.rvm/rubies/ruby-2.0.0-p451/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/snowinmay/.rvm/bin:/Users/snowinmay/.rvm/bin:/Users/snowinmay/.rvm/bin: No such file or directory运行：Prince-2:~ snowinmay$ curl -0 -L http://npmjs.org/install.sh | sh% Total % Received % Xferd Average Speed Time Time Time CurrentDload Upload Total Spent Left Speed0 193 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0100 6711 100 6711 0 0 2324 0 0:00:02 0:00:02 --:--:-- 5386tar=/usr/bin/tarversion:bsdtar 2.8.3 - libarchive 2.8.3install npm@latestfetching: http://registry.npmjs.org/npm/-/npm-1.4.21.tgz0.10.291.4.21cleanup prefix=/Users/snowinmay/work/nodefind: /Users/snowinmay/work/node/share/man: No such file or directoryfind: /Users/snowinmay/work/node/share/man: No such file or directoryfind: /Users/snowinmay/work/node/lib/node: No such file or directoryfind: /Users/snowinmay/work/node/lib/node: No such file or directoryAll clean!> npm@1.4.21 prepublish .> node bin/npm-cli.js prune --prefix=. --no-global && rm -rf test/*/*/node_modules && make -j8 docmake: Nothing to be done for `doc'./Users/snowinmay/work/node/bin/npm -> /Users/snowinmay/work/node/lib/node_modules/npm/bin/npm-cli.jsnpm@1.4.21 /Users/snowinmay/work/node/lib/node_modules/npmIt worked问题结束===================================/etc/profile；/etc/bashrc 是针对系统所有用户的全局变量，只有root用户才能修改这两个文件，对一般用户来说是他们是只读的。一般用户要想修改它们，可以在命令前加sudo，意思是以Root身份执行，比如：sudo vi /etc/profile ，然后按照提示输入密码即可。因此，对于一般用户而言，通常我们建议去修改~/.bash_profile来设置环境变量，它是用户级的设置，只对当前用户有效。操作步骤:1、打开Terminal（终端） 2、输入：vi ~/.bash_profile 3、设置PATH：export PATH=/usr/local/mysql/bin:$PATH 4、输入：:wq //保存并退出vi 5、修改立即生效：source ~/.bash_profile 6、查看环境变量的值：echo $PATH注意：1、~/.bash_profile中有个点 2、如果是新增环境变量或者是修改环境变量的值，都需要source一下才能立即生效。如果是删除一个环境变量，必须输入exit以logout当前shell，然后再重新打开一个新的shell并login才能生效。 Prince-2:~ snowinmay$ vim .bash_profile Prince-2:~ snowinmay$ source ~/.bash_profile Prince-2:~ snowinmay$ $PATH-bash: ~/work/node/bin:/Users/snowinmay/.rvm/gems/ruby-2.0.0-p451/bin:/Users/snowinmay/.rvm/gems/ruby-2.0.0-p451@global/bin:/Users/snowinmay/.rvm/rubies/ruby-2.0.0-p451/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/snowinmay/.rvm/bin:/Users/snowinmay/.rvm/bin: No such file or directory但是npm还是不能用：Prince-2:node snowinmay$ node -vv0.10.29Prince-2:node snowinmay$ npm -vmodule.js:340throw err;^Error: Cannot find module 'npmlog'at Function.Module._resolveFilename (module.js:338:15)at Function.Module._load (module.js:280:25)at Module.require (module.js:364:17)at require (module.js:380:17)at /Users/snowinmay/work/node/bin/npm:19:11at Object.(/Users/snowinmay/work/node/bin/npm:87:3)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
Prince-2:node snowinmay$
Prince-2:node snowinmay$
Prince-2:node snowinmay$ make install
make: * No rule to make target install'. Stop. Prince-2:node snowinmay$ curl https://npmjs.org/install.sh | sh % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 193 100 193 0 0 119 0 0:00:01 0:00:01 --:--:-- 153 sh: line 1: html: No such file or directory sh: line 2: syntax error near unexpected token<'
'h: line 2: `Prince-2:node snowinmay$ sudo npm install -g npmlog
Password:
sudo: npm: command not found
Prince-2:node snowinmay$
Prince-2:node snowinmay$ which node
Prince-2:node snowinmay$ which npm
