sendandrev reentry

wangzhengquan

2020-12-01 caecfd9123e17b916c1e6e79f967afb3cdeaa0bb

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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