Merge branch 'master' of https://shmqueue

wangzhengquan

2020-08-23 3c4b18f39e06a09a05a13476f212d4deaa1e4707

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ipcrm -a
 
./dgram_mod_req_rep server 2 & node0=$! && sleep 1
./dgram_mod_req_rep client 2 node1
kill $node0