UNIX command

• ls --- lists your files ls -l --- lists your files in 'long format', which contains lots of useful information, e.g. the exact size of the file, who owns the file and who has the right to look at it, and when it was last modified. ls -a --- lists all files, including the ones whose filenames begin in a dot, which you do not always want to see. There are many more options, for example to list files by size, by date, recursively etc.

OSGI 实践 文档

SGI在国内的关注度目前仍然很低，而Equinox更是，其实在国外OSGI、Equinox的关注度都算挺高的，目前国外已经有不少的项目采用Equinox作为基础框架了，OSGI的推广之所以比较难的原因就在于OSGI的引入并不象决定项目是采用struts还是webwork那么简单，OSGI带来的是设计思想以及开发方式的改变

The Elements of Style

简单易懂的英文 The book covers only a small portion of the field of English style, but the experience of its writer has been that once past the essentials, students profit most by individual instruction based on the problems of their own work, and that each instructor has his own body of theory, which he prefers to that offered by any textbook.

learn you a haskell

Welcome to Learn You a Haskell for Great Good! If you’re reading this, chances are you want to learn Haskell. Well, you’ve come to the right place, but let’s talk about this tutorial a bit first.