I have an application myapp
which should send log files only to /var/log/myapp.log
. myapp
is written in C++. The following sample code, sends the logs to /var/log/syslog only. My os is Linux - Ubuntu 12.04 - to be specific. I also found that my machine has rsyslog than syslog installed.
#include <stdio.h>
#include <unistd.h>
#include <syslog.h>
int main(void) {
openlog("myapp", LOG_PID|LOG_CONS, LOG_USER);
syslog(LOG_INFO, "abc 10");
closelog();
return 0;
}
According to the syslog(3) manpage, the first parameter for openlog() sets a prefix for log messages, not a filename. You can use a facility like LOG_LOCAL0 to flag your output and then configure syslogd using /etc/syslog.conf to send those logs to the file of your desire.