>>>If I want to get exclusive use of a dbf() on the network Can I simply test for someone using it first by issuing " ?flock()" so that I won't have to resort to an error routine?
>>
>>You can still get a file lock on a table that is open by another user as long as the other user has no records locked. While it is a good first clue to exclusivity, flock is not a guarantee that you can then open the table exclusively. Try:

>>lcOldError = on('error')
>>llOpen = .t.
>>on error llOpen = .f.
>>use mytable excl
>>on error &lcOldError
>>if !llOpen
>>   return .f.
>>endif

>
>Mark, does the used() command work,I just want to know if the file is being used at all by another user without an error routine. otherwise I will follow your example.

Nope. Used() will only tell you if the table is open in the current data session of the current user.