udpate

wangzhengquan

2020-08-23 c1d70e0a50138fcbbe3c1045d3c61b9b5bdb8e22

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ipcrm -a
rm *.txt
./test_lostdata
sort -n c.txt  > c1.txt
sort -n p.txt  > p1.txt
diff -u p1.txt c1.txt