You need to do:
sudo syslog -c 0 -d
This sets the logging level to debug.
> From: John Devlin <email@hidden>
> Date: Sun, 9 Mar 2008 19:43:59 -0700
> To: Darwin Dev <email@hidden>
> Subject: ASL_LEVEL_DEBUG
>
> I'd like to send debug messages to the asl system log on Leopard
> without using sudo, but haven't had any success.
>
> I compiled and ran a test program (see below).
>
> On 2 Oct 2006, at 10:23 AM, Marc Majka wrote:
>
>> Here's a small test program that will also send a "test" message
>> with the "raduis" facility:
>>
>> #include <asl.h>
>> #include <string.h>
>>
>> int main()
>> {
>> aslmsg m = asl_new(ASL_TYPE_MSG);
>> asl_set_filter(NULL, ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG));
>>
>> asl_set(m, "Facility", "radius");
>> asl_log(NULL, m, ASL_LEVEL_DEBUG, "test");
>>
>> return(0);
>> }
>
> After which I tried to read the message back from the log
>
> % syslog -k Facility radius
> % syslog -k Level 7
>
> but didn't find anything. I checked to make sure the the master filter
> was off, and it was.
>
> % syslog -c 0
> Master filter mask: Off
>
>
> So I compiled and ran a second test program (see below).
>
>> If you read through the man page, you'd also find that the following
>> code *should* work:
>>
>> aslclient a = asl_open(NULL, "radius", 0);
>> asl_set_filter(NULL, ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG));
>>
>> asl_log(a, NULL, ASL_LEVEL_DEBUG, "test");
>> asl_close(a);
>> return(0);
>>
>> But due to a bug in asl_open(), it doesn't. Sorry about that! The
>> bug will be fixed in 10.5 (Leopard).
>
> That didn't work either. I searched the lists for 'ASL_LEVEL_DEBUG'
> but didn't come up with anything beyond the two tests above. Any ideas
> why neither of those two programs work on 10.5.2? Any ideas what would?
>
> John
>
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