sos@xxxxxxxx (Steve Siegfried) writes: > I'm attaching a script (waaay at the bottom), "DISPATCH", which manages > up to N simultaneous jobs. IMHO a better (and easier) approach would be to use xargs because it does exactly what your long script does (I think, I didn't review carefully I admit): echo {1..19} | xargs -n 3 -P 3 echo I used -n because you had 3 args in your example; -P limits the number of concurrent processes. A far better example that actually shows the proc limit would be with the following script in place of the echo command: #!/bin/bash echo "pid: $$ ($(date)) $@" sleep 2 Here's the result: pid: 14729 (Tue Jun 27 23:30:51 CEST 2006) 4 5 6 pid: 14732 (Tue Jun 27 23:30:51 CEST 2006) 7 8 9 pid: 14727 (Tue Jun 27 23:30:51 CEST 2006) 1 2 3 pid: 14736 (Tue Jun 27 23:30:53 CEST 2006) 10 11 12 pid: 14739 (Tue Jun 27 23:30:53 CEST 2006) 13 14 15 pid: 14742 (Tue Jun 27 23:30:53 CEST 2006) 16 17 18 pid: 14745 (Tue Jun 27 23:30:55 CEST 2006) 19 -- Mathieu Chouquet-Stringer