The -n debugging flag causes make to print a list of things it thinks it needs to do; it's not always correct, but it often gives you an idea of what's wrong.
n 调试标记会导致 make 打印它认为需要做的事情的一个列表；这并不总是正确的，不过通常可以为思考哪些地方出现了问题而提供一些思路。
It is better, however, to use plain expunge after all the messages are moved, in combination with the -n flag.
然而，更好的方法是在移动所有消息之后直接使用expunge，并加上- n标志。
To change a trusted broker back to standard mode, use the -n flag on the mqsichangeproperties command.
把可信代理改为标准方式的方法是在mqsichangeproperties命令中使用- n标志。
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