looking for a UNIX job scheduler

[d3e608 at pnli.pnl.gov]

Does a job scheduler exists for UNIX which can handle job dependencies, e.g.,
job B depends on the successful completion of job A?  Are there any programs
like this in the pulic domain?  All pointers appreciated.

Thanks,
Jeff Nye                   jp_nye at pnl.gov
Battelle PNL K6-10         voice:  (509) 376-4571, days, PDT 
PO Box 999                 Richland, WA 99352  

He looked at me as if I was a side dish he hadn't ordered.