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exec 3</home/ww/result/ps.txt
while read line <&3; do
a=$(($a+1));
echo $a >> /home/ww/result/result.txt
echo $line |tee -a /home/ww/result/result.txt
grep -r $line /home/ww/work/code |tee -a /home/ww/result/result.txt
exec 3<&-
while read line; do
a=$(($a+1));
echo $a >> /home/ww/result/result.txt
echo $line |tee -a /home/ww/result/result.txt
grep -r $line /home/ww/work/code |tee -a /home/ww/result/result.txt
done < /home/ww/result/ps.txt