如何循环遍历unix shell脚本中与正则表达式匹配的文件

I want to be able to loop through a list of files that match a particular pattern. I can get unix to list these files using ls and egrep with a regular expression, but I cannot find a way to turn this into an iterative process. I suspect that using ls is not the answer. Any help would be gratefully received.I want to be able to loop through a list of fil