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#! /bin/bash
NJOB=8
i=0
while [ $i -lt $NJOB ]
do
/bin/sh -c "sleep 4; exit 0" &
rv=$?
pid=$!
eval bg_pid_$i=$pid
# echo $$: Job $i: pid is $pid rv=$rv
i=$((i + 1))
done
i=0
while [ $i -lt $NJOB ]
do
eval wpid=\$bg_pid_$i
echo Waiting for job $i #'('pid $wpid')'
wait $wpid
rv=$?
echo job $i returns $rv
i=$((i + 1))
done
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