%SYSEXEC<command>;  

no argument
puts you into operating environment mode under most operating environments, where you can issue operating environment commands and return to your SAS session.

command
is any operating environment command. If command contains a semicolon, use a macro quoting function.

Example 1: Executing Operating Environment-Specific Utility Programs
In this macro, ACLIB, the %SYSEXEC statement executes one of two operating environment utility programs based on the value of the automatic macro variable SYSSCP. If the value of SYSSCP is anything other than OS or VMS , ACLIB writes a message in the SAS log indicating that no utilities are available.

%sysexec 执行的语句不能用引号，基本用法是差不多的：

刚看清你的问题，你是在说 proc catalog 吧？

刚查看了下proc catalog的用法
应该不是这个过程
我是要用SAS中的过程步操作保存在硬盘上的其他文件，比如excel文件
而不是SAS生成的数据文件
有什么过程可以做到呢？
谢谢!

用proc import应该也可以吧