BeagleBone/BeagleBoard手动启动Cloud9开发环境
由于项目的缘故有机会接触到BeagleBone（我的是Rev5）的，说实话深深地被Cloud9和BoneScript这种开发方式震撼到。研究了几天稍稍的有点眉目了，下面就谈谈怎么手动的启动Cloud9开发环境吧。
一开始我是用ps -ef看到了启动Cloud9的命令，Bone101的也看得了，Cloud9用的是node4，而Bone101用的是node，不清楚它们之间有什么不同，试了一下用node启动Cloud9，失败了。
默认情况下Cloud9的端口为3000，Bone101的端口为80。
根据我看到的命令，我先把原来的Cloud9停止了，然后试着用命令
/usr/bin/node4 /usr/share/cloud9来启动，但是失败了，错误信息如下：
info - socket.io started
uncaught exception:
Error
at Object.<anonymous> (/usr/share/cloud9/support/jsdav/lib/DAV/exceptions.js:82:37)
at Module.<anonymous> (module.js:411:26)
at Module._compile (/usr/share/cloud9/support/requireJS-node.js:9:27)
at Object..js (module.js:417:10)
at Module.load (module.js:343:31)
at Function._load (module.js:302:12)
at require (module.js:355:19)
at Object.<anonymous> (/usr/share/cloud9/support/jsdav/lib/DAV/server.js:14:14)
at Module.<anonymous> (module.js:411:26)
at Module._compile (/usr/share/cloud9/support/requireJS-node.js:9:27)
后来我又再试了一下
/usr/bin/node4 /usr/share/cloud9 --help，得到如下的帮助信息：
Usage: /usr/bin/node4 /usr/share/cloud9 [options]
Show this help message
--help
Load the configuration from a config file. Overrides command-line options. Default: <null>
-c, --config <value>
Run child processes with a specific group. Default: <false>
-g, --group <value>
Run child processes as a specific user. Default: <false>
-u, --user <value>
Activate debug-mode. Default: <false>
-d, --debug
Define an action to execute after the Cloud9 server is started. Default: <null>
-a, --action <value>
IP address where Cloud9 will serve from. Default: <127.0.0.1>
-l, --ip <value>
Port number where Cloud9 will serve from. Default: <3000>
-p, --port <value>
Path to the workspace that will be loaded in Cloud9 (may be relative or absolute). Default: <.>
-w, --workspace <value>
看了帮助就知道大致的启动命令了，指定一下端口、监听地址、工作目录就行了，使用命令
/usr/bin/node4 /usr/share/cloud9 -p 9112 -w /var/lib/cloud9 -l 0.0.0.0
，一定要监听0.0.0.0，否则的话你的电脑没法访问Cloud9，也必须指定一下工作目录，否则启动不成功。
之后一切正常了：
info - socket.io started
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Ajax.org Cloud9 IDE
version 0.6
Project root is: /var/lib/cloud9
Point your browser to http://localhost:9112