leostereo,

Since this works for you, everything may be Great!

However since this process is long-running, it might be better to pre-fork some number (maybe 8) of waiting children. Currently, you 'fork' for each message, and 'fork' uses a lot of computer power just to start.

If you 'Super Search' on 'pre-fork' you should find examples.

Use 'kill -0 $pid' to see if the child is *working*, and the parent can 'fork' another child is not.
Please note, this is not a trivial script, but once you learn how to use the technique, you'll be very glad/proud of your work!

Good Luck

Regards...Ed