Hello Charming Man, Sorry for being late to reply. I don't quite understand "ant" and "make" method you mentioned,could you please give some examples? Here is the sample requirement: I have three sas jobs job1.sas,job2.sas,job3.sas(source codes are generated by SAS/Warehouse Administrator,so they are not wrapped up in macros).They are independent of each other.But I have an another sas job job4.sas ,which depends on sucessful completion of prevoius three jobs(if any of three jobs fails,job4.sas should not run).For efficiency,I'd like to concurrently run job1.sas,job2.sas,job3.sas(parallel execution to take advantage of multi processor on Unix),if sucessful then kick off job4.sas. My question is :how to automate the whole process? I'd like to see all the possible solutions(macros,shell scipt,etc.) And is there any way to stop the whole process automatically and send notification(email or pager) if any data step or proc step error occurs in job1 or job2 or job3? Thanks, Tony