The output log will also contain useful information in case a problem occurred, so it's always a good idea to check on it.
输出的日志文件将包含有用的信息以防出现问题，因此检查它通常是一个很好的做法。
Listing 7. Output log for shm_client1 vs. shm_client2.
清单7. shm_client1与shm_client2的输出日志。
Listing 7. Output log for shm_client1 vs. shm_client2.
清单7. shm_client1与shm_client2的输出日志。
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