#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

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