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I've been using Console to debug some things on my Mac, and I keep seeing --- last message repeated one time --- in the log. Apparently it's not really essential, and you can turn it off on the command line with the -dup_delay switch on syslogd (see here). But how do I do that so it turns it off in the Console app? I don't want to start syslogd again, I just want to change a setting on the currently running process.

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The Console application is simply reading the log files. I suspect running syslogd with that flag will cure your problem, as syslogd will then write the log files differently..

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