There are also two user defined signals: SIGUSR1 (signal 30) and SIGUSR2 (signal 31).

还有两个由用户定义的信号：SIGUSR1(信号30)和SIGUSR2(信号31)。

youdao

You can change the log level at run time by sending a SIGUSR1 signal to the Samba process to increase the log level or SIGUSR2 to decrease the log level.

您可以在运行时更改日志级别，方法就是发送SIGUSR1信号给Samba进程来增加日志级别，或发送SIGUSR2减少日志级别。

youdao