如何用脚本实现数字的四舍五入

jsliu

怎么编写数字的四舍五入啊?
比如:

0.22222=0.222
0.22299=0.223

请求大家的帮助
谢谢

jsliu

Think you very much.

Now I have a better method to get it.
#printf $.3f 0.222999
#printf $.3f 0.222333

The above two commands work well. And thank you for your answer.