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Wait for sentinel file to clear
-- Shell scripting: wait for sentinel file to clear
#
# Wait for batch queue to clear.
#
# Keep concurrent processes to four or less
#
i=`ls /tmp/batchflag*.log 2>/dev/null | wc -l`
# loop, until three or less batch processes are running.
while test $i -gt 0 ; do
echo "Waiting for sentinel to clear ..."
sleep 10
i=`ls /tmp/batchflag*.log 2>/dev/null | wc -l`
done
-- Alternative
while test -f /tmp/sqlldr*.txt 2>/dev/null ; do
echo `date` " File exists ..."
sleep 5
done
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