OS X:从Finder启动时，奇怪的-psn命令行参数 [英] OS X: strange -psn command line parameter when launched from Finder

问题描述

由MyApp.app包中的外壳脚本启动的OS X Java应用程序在从Finder启动时会获得一个奇怪的命令行参数-psn_0_989382，但在从Terminal直接启动时却不会.在哪里可以找到信息，此命令行参数有什么用?

Our OS X Java application which is launched by a shell script inside the MyApp.app bundle gets a strange command line parameter -psn_0_989382 when launched from the Finder, but not when launched directly from the Terminal. Where can I find information what this command line parameter is good for?

推荐答案

Mac OS X为通过GUI启动的所有应用分配唯一的进程序列号("PSN").用于识别可执行程序的各种进程和实例.

Mac OS X assigns a unique process serial number ("PSN") to all apps launched via GUI. It's used for identifying various processes and instances of executables.

我没有什么可以真正添加到文档中的，所以最好的方法是阅读

There's nothing I can really add to the documentation, so the best thing is to read the ProcessSerialNumber section of the Carbon Process Manager Reference (original Apple link is dead; this is a mirror).

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