Terminator is an alternative of gnome-terminal. It has the multiple windows terminals capability. Be default, the window size is small, so it’s useful to set its default size larger.

从国内连接rubygems有时会有超时错误(由此可见为什么程序员不喜欢”长城”)，淘宝为此建立了一个rubygems的镜像网站，经过以下设置可以让本地的rubygems使用该镜像站点。这次淘宝立功了，感谢huacnlee同学。

In some cases, when running ant build, some parameters of ant are needed. If we run ant from command line, we can add the parameters as “-Dproperty=value” within the ant command(from here).

From here:

Use the following command to query a gem’s detail information with the gem name as the query condition: