Refactor

[MarcSteven]

I think some var names are bad ,so should think about refactoring it ,for instance when I saw the var name ,if lack of comments I cannot understand the meaning about it ..

[mxcl]

You didn't specify which name you had trouble with.

[MarcSteven]

For instance cwd variable name ,if lack of comment who can know its meanings??? @mxcl only my tips, as a developer writing readable code is not easy ,naming is a tough topic

[mxcl]

cwd is a command line command. This library uses those names in general. If you aren’t familiar with them I recommend one of the alternatives.