Compass安装和使用

Compass 是Ruby开发的 ，在使用前需要系统安装 Ruby环境，这里就不介绍了，可以去百度下。

输入如下命令，如果是windows用户可以将sudo去掉：

　sudo gem install compass

如果出错类似这样：

$ sudo gem install compass
Password:
Fetching: chunky_png-1.3.5.gem (100%)
Successfully installed chunky_png-1.3.5
Fetching: sass-3.4.22.gem (100%)
ERROR:  While executing gem ... (Errno::EPERM)
    Operation not permitted - /usr/bin/sass

需要将命令改为：

$ sudo gem install -n /usr/local/bin compass

出现 installed字样说明安装成功。

Successfully installed sass-3.4.22
Fetching: multi_json-1.11.2.gem (100%)
Successfully installed multi_json-1.11.2
Fetching: compass-core-1.0.3.gem (100%)
Successfully installed compass-core-1.0.3
Fetching: compass-import-once-1.0.5.gem (100%)
Successfully installed compass-import-once-1.0.5
Fetching: rb-fsevent-0.9.7.gem (100%)
Successfully installed rb-fsevent-0.9.7
Fetching: ffi-1.9.10.gem (100%)
Building native extensions.  This could take a while...
Successfully installed ffi-1.9.10
Fetching: rb-inotify-0.9.7.gem (100%)
Successfully installed rb-inotify-0.9.7
Fetching: compass-1.0.3.gem (100%)
    Compass is charityware. If you love it, please donate on our behalf at http://umdf.org/compass Thanks!
Successfully installed compass-1.0.3
Parsing documentation for sass-3.4.22
Installing ri documentation for sass-3.4.22
Parsing documentation for multi_json-1.11.2
Installing ri documentation for multi_json-1.11.2
Parsing documentation for compass-core-1.0.3
Installing ri documentation for compass-core-1.0.3
Parsing documentation for compass-import-once-1.0.5
Installing ri documentation for compass-import-once-1.0.5
Parsing documentation for rb-fsevent-0.9.7
Installing ri documentation for rb-fsevent-0.9.7
Parsing documentation for ffi-1.9.10
Installing ri documentation for ffi-1.9.10
Parsing documentation for rb-inotify-0.9.7
Installing ri documentation for rb-inotify-0.9.7
Parsing documentation for compass-1.0.3
Installing ri documentation for compass-1.0.3
8 gems installed
~ yt$

创建compass项目

compass create myproject

编译项目

　compass compile

会把sass 生成了 CSS文件了