确保安装了python

python -V  Python 2.x.x 开始安装：

1.下载nodejs到本地并解压缩
wget http://nodejs.org/dist/v0.9.0/node-v0.9.0.tar.gz
tar zxvf node-v0.9.0.tar.gz

2.进入到该目录编译和安装   cd node-v0.9.0
./configure --prefix=/usr/local/node/0.9.0
这里安装在了/usr/local/node/0.9.0目录下
make
make install

3.配置NODE_HOME
vi /etc/profile 在export PATH USER 。。。一行的上面添加如下内容，并将NODE_HOME/bin设置到系统path中

set for nodejs

export NODE_HOME=/usr/local/node/0.9.0
export PATH=$NODE_HOME/bin:$PATH
保存退出后执行如下命令，使刚才的配置生效
source /etc/profile

执行node -h命令验证设置成功

node -h  Usage: node [options] [ -e script | script.js ] [arguments]
node debug script.js [arguments]

Options:
-v, --version                                        print node's version
-e, --eval script                                   evaluate script
-p, --print                                            print result of --eval
-i, --interactive                                   always enter the REPL even if stdin
does not appear to be a terminal
--no-deprecation                               silence deprecation warnings
--trace-deprecation                           show stack traces on deprecations
--v8-options                                       print v8 command line options
--max-stack-size=val                        set max v8 stack size (bytes)

Environment variables:
NODE_PATH                                     ':'-separated list of directories
prefixed to the module search path.
NODE_MODULE_CONTEXTS     Set to 1 to load modules in their own
global contexts.
NODE_DISABLE_COLORS           Set to 1 to disable colors in the REPL

Documentation can be found at http://nodejs.org/