On 01/04/2010 11:52 AM, I=F1aki Baz Castillo wrote: > Hi, I know that a Ruby process with PID 1000 (under Linux) has forked 4= times.=20 > How could I know the PID of those childs from any other ruby interprete= r? > This is, I just know the PID of the parent (1000). >=20 > Of course I could do some hack as inspecting the output of "ps" and ins= pecting=20 > the pid/ppid, but I'd prfer a ppure Ruby method for this. >=20 > Thanks for any suggestion. The typical approach is that the forking parent records PIDs of its=20 children. If that information needs to be propagated you can either=20 write it to a file or make it available via DRb. If you need multiple Ruby processes to collaborate I would probably turn = to DRb anyway. In that case you might not even need to record PIDs but=20 you could have a coordinator where processes register and unregister or=20 which starts processes itself. It depends on your use case. Kind regards robert --=20 remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/