It's a powerful command to rename files in a batch. Usage: rename 's/(\d+)$/$1.txt/' * rename add '.txt' extension name for all files that ends with number.

If you have http proxy, set it to system environment, export http_proxy=http://127.0.0.1:8000 Then start the application in that same terminal. If the proxy is socks proxy, use 'tsocks' to wrap the application in terminal.

Honestly speaking, you have eaten the best delicious food if you're living in China. Though we have more and more concerns on the safety of food, we have to recognize that Chinese food is more delicious than others. The cuisine is simple in Austria. People always use pork, beef, flour, tomato, potato and few green …

Joel posted a blog related to how to hire the great programmers. One of his key points is building comfortable workspaces. I believe every programmer loves the workspace like Google and Fog Creek. The workspace of Google has been very famous due to its French chef, gymnasium and big sofas. Why is Fog Creek? It's the …

Salzburg is a small city and is on the banks of the Salzach River. It's easy to go through the city by bus in 30 minutes. Salzach River outline view Riding the bicycle is a very good way to enjoy the beautiful sight of the city. You could see many kids with parents riding bicycle in the sunny weekend. The train station …

There are 20+ staffs in Salzburg office. Most of them are developers, one is administrator of office. Generally the staffs in Salzburg work more flexible than the staffs working in Beijing. Some of them live in German. Even though it's not so far as Salzburg, they also need come to Salzburg by train. So sometimes they …

度过长途飞行的旅程不是一件容易的事。要在狭小的空间里待上近10个小时，好在是两人出行，半睡半聊的打发过了时间。 到达维也纳之后，出了登机通道看到的居然是一个酒吧类的餐馆。感觉很稀奇，也很有味道。 周围当然少不了免税店和商铺，但远没有首都机场那样的规模。总体感觉就像国内大型超市购物出口一样，而且人也不多。 另外赞一下维也纳机场的Wifi，简单配置就K了，哪像国内的，又要移动号码，还要短信获取，搞半天也没弄定。 转机之前还有段时间，就在机场里到处逛了逛。顺便在一个吧解决了晚餐，同时也尝了杯当地啤酒。 去萨尔茨堡的飞机还是带螺旋桨的，头次坐这样的老式飞机。

Check out this SlideShare Presentation: Discovering the p2 API View more presentations from Sonatype.

Days ago I updated my p2 replication tool. It's easier to install it in your Eclipse. A new component named 'Eclipse marketplace' is added into Eclipse SDK since Helios, which is an application store for Eclipse. People could be easy to install third party plug-ins into their Eclipse. You can launch marketplace via …

1. tcpdump tcpdump -n port 80 -i eth0|lo monitor all package transferred on 80 port on the network interface eth0/lo
2. netstat netstat -anp|grep java trace all network traffic on the process named java netstat -anp|grep 128.224.159.xxx trace all network traffic on the host whose ip address is 128.224.159.xxx
3. …