$ file command arg1 arg2 arg3
$ command > file arg1 arg2 arg3
$ command arg1 > file arg2 arg3
$ command arg1 arg2 > file arg3
$ command arg1 arg2 arg3 > file
linux bash 中的重定向
原文：http://www.cnblogs.com/lian4187/p/4418047.html
