E:\weigu_app_view>C:\Ruby22\bin\sass.bat css\test1.sass:css\1.css
WARNING on line 4 of css\test1.sass:
This selector doesn't have any properties and will not be rendered.
Error: Invalid CSS after "html ": expected selector, was "{"
on line 3 of css\test1.sass
Use --trace for backtrace.
css\test1.sass:css\1.css 这个路径里面的：冒号是什么意思？
这个跟ms-dos无关 这里的冒号是sass处理脚本 用以标记输入输出文件路径的css\test1.sass:css\1.css 即是把css目录下的test1.sass编译为css并输出到css目录下的1.css