Write Naemon Log

We can write to naemon.log file by issue command

OMD[monitor@501264b41d2d]:~/var/naemon$ pwd
/omd/sites/monitor/var/naemon
OMD[monitor@501264b41d2d]:~/var/naemon$ echo "[$(date +%s)] User Activity msg TEST log" >> naemon.log 

Linux command date +%s will print time in current time since Epoch 1970

In C program, we can implement this function with bash shell via system( bash cmd )

int writeLogFile( char *msg )
{
   char str_msg[1024];
   sprintf( str_msg, "echo \"[%d] User Activity %s \" >> /omd/sites/monitor/var/naemon/naemon.log",(int)time(NULL), msg);
   printf(str_msg);
   system(str_msg);
   return 0;
}