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clinuxsyslog

where syslog store error messages

syslog() generates a log message

syslog(LOG_ERR, "%s failed: %d (%m)", str, errno); syslog(LOG_NOTICE, "%s failed: %d (%m)", str, errno); syslog(LOG_INFO,"%s",str);

where does it store this info?

I can not find any file in the server by the name of LOG_ERR, LOG_NOTICE,LOG_INFO.

Please suggest.

Solution

  • Under Linux you can find them here : /var/log/syslog, if you run this simple program:

    #include <syslog.h>

int main(int argc, char **argv)
{
        /* Various syslog messages */
        syslog (LOG_CRIT, "%s", "That's critic");
        syslog(LOG_ALERT, "An alert\n");
        syslog(LOG_ERR, "Error on this DAEMON\n");

        return 0;
}

    and open a terminal and run this:

    toc@UnixServer:/var/log$ tail -f syslog

    You should see something like this:

    Aug 18 08:42:21 TarekServer SYSLOG: That's critic
Aug 18 08:42:21 TarekServer SYSLOG: An alert
Aug 18 08:42:21 TarekServer SYSLOG: Error on this DAEMON