How to wait in a bash script for several subprocesses spawned from that script to finish, and then return exit code !=0 when any of the subprocesses ends with code !=0?
for i in `seq 0 9`; do
doCalculations $i &
The above script will wait for all 10 spawned subprocesses, but it will always give exit status 0 (see help wait). How can I modify this script so it will discover exit statuses of spawned subprocesses and return exit code 1 when any of subprocesses ends with code !=0?
Is there any better solution for that than collecting PIDs of the subprocesses, wait for them in order and sum exit statuses?