清除进程检查这个表来确定该进程是不是保持一个锁。
The cleanup process consults this table to determine if the process was holding a latch.
获得要检查的进程的名称，并将其分配给一个变量(第3行)。
Get the name of a process to check and assign it to a variable (line 3).
运行以下命令检查守护进程是否已经启动。
Run the following command to check if the daemons are started or not.
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